Knife - Essential Tool for Camping, Outdoor Adventure and collection

Following the success of the FULCRUM multi-purpose knife, the bayonet version was developed, designed for even more specific and demanding applications. Like the FULCRUM, the bayonet is an extremely robust and versatile knife: the blade withstands breaking loads exceeding 150 kg, the tip is extremely durable, and the profile allows for extended use without compromising the sharpness of the cutting edge. The forward-shifted center of gravity, combined with the blade’s weight, ensures excellent performance in the most demanding fieldwork, offering power and control even under the toughest conditions.

The 2026 EVO model introduces a major design update: the knife’s tang now features a completely redesigned structure, engineered to improve structural rigidity and optimize stress management during the most intense use, while also offering a more precise and secure feel during technical tasks.

This specific civilian NFG (No Fixing Gear) version retains the same operational structure but lacks the rifle attachment mechanisms, making it more streamlined, lightweight, and geared toward professional outdoor use.

Intended Use: Multi-purpose / Utility / Tactical

Production Type: Industrial
Country of Manufacture: Italy
Blade: hidden tang in N690Co stainless steel, 58 HRC
Blade finish: Stonewashed
Handle: detachable, made of Forprene, with a full-tang guard and stainless steel tang.
Blade length: 180 mm.
Blade thickness: 6.3 mm.
Overall length: 309 mm.
Weight: 391 g.
Sheath: modular tactical nylon thigh sheath with polymer interior, equipped with a wire cutter and diamond-coated plate for field sharpening
Packaging: Cardboard box with Extrema Ratio logos
Notes: Civilian version without weapon attachment systems, making the Fulcrum EVO Bayonet a standard knife available for free sale and legal possession

Following the success of the FULCRUM multi-purpose knife, the bayonet version was developed, designed for even more specific and demanding applications. Like the FULCRUM, the bayonet is an extremely robust and versatile knife: the blade withstands breaking loads exceeding 150 kg, the tip is extremely durable, and the profile allows for extended use without compromising the sharpness of the cutting edge. The forward-shifted center of gravity, combined with the blade’s weight, ensures excellent performance in the most demanding field work, offering power and control even under the toughest conditions.

The 2026 EVO model introduces a major design update: the knife’s tang now features a completely redesigned structure, engineered to improve structural rigidity and optimize stress management during the most intense use, while also offering a more precise and secure feel during technical tasks.

This specific civilian NFG (No Fixing Gear) version retains the same operational structure but lacks the rifle attachment mechanisms, making it more streamlined, lightweight, and geared toward professional outdoor use.

Intended Use: Multi-purpose / Utility / Tactical

Production Type: Industrial
Country of Manufacture: Italy
Blade: Hidden tang in N690Co stainless steel, 58 HRC
Blade Finish: MIL-C-13924 burnished
Handle: Detachable, made of Forprene, with a full-length guard and burnished stainless steel tang.
Blade length: 180mm.
Blade thickness: 6.3mm.
Overall length: 309mm.
Weight: 391g.
Sheath: Modular tactical nylon thigh sheath with polymer interior, equipped with a wire cutter and diamond-coated plate for field sharpening
Packaging: Cardboard box with Extrema Ratio logos
Notes: Civilian version without weapon attachment systems, making the Fulcrum EVO Bayonet a standard knife available for free sale and legal possession

Following the success of the FULCRUM multi-purpose knife, the bayonet version was developed, designed for even more specific and demanding applications. Like the FULCRUM, the bayonet is an extremely robust and versatile knife: the blade withstands breaking loads exceeding 150 kg, the tip is extremely durable, and the profile allows for extended use without compromising the sharpness of the cutting edge. The forward-shifted center of gravity, combined with the blade’s weight, ensures excellent performance in the most demanding field work, offering power and control even under the toughest conditions.

The 2026 EVO model introduces a major design update: the knife’s tang now features a completely redesigned structure, engineered to improve structural rigidity and optimize stress management during the most intense use, while also offering a more precise and secure feel during technical tasks.

This specific civilian NFG (No Fixing Gear) version retains the same operational structure but lacks the rifle attachment mechanisms, making it more streamlined, lightweight, and geared toward professional outdoor use.

Intended Use: Multi-purpose / Utility / Tactical

Production Type: Industrial
Country of Manufacture: Italy
Blade: Hidden tang in N690Co stainless steel, 58 HRC
Blade Finish: MIL-C-13924 burnished
Handle: Detachable, made of Forprene, with a full-length guard and burnished stainless steel tang.
Blade length: 180mm.
Blade thickness: 6.3mm.
Overall length: 309mm.
Weight: 391g.
Sheath: Modular tactical nylon thigh sheath with polymer interior, equipped with a wire cutter and diamond-coated plate for field sharpening
Packaging: Cardboard box with Extrema Ratio logos
Notes: Civilian version without weapon attachment systems, making the Fulcrum EVO Bayonet a standard knife available for free sale and legal possession

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Withdrawn from a private collection, previously purchased
* Condition: Never used, never removed from its sheath, never displayed; as it is a carbon blade and has remained in its sheath for a long time, it has unfortunately developed small spots of oxidation on the blade, which can be easily removed with a potential re-sharpening. However, it is not possible to remove the oxidation present on the passivating oxidation of the hamon. The price at which it is offered takes into account these aesthetic details, which in no way compromise its potential practical use.
* Available on the market: unique piece, entirely handmade
* Sharpening: Factory
* Marks on blade: small spots of oxidation, some potentially removable (those on the edge and tip of the blade)
* Marks on handle: None
* Box: Sold with burgundy velvet case
* Sheath: Like new, never used and never worn
* Manuals, Certificates, and Warranties: -
* Checked and Certified by our in-house laboratory

CAS Knives is the brand of Argentine brothers Claudio, Ariel, and Marcelo Sobral, artisans specializing in custom knives.

Claudio, who has been passionate about weapons since he was young, started working in a weapons factory at the age of 16, acquiring skills in forging and metalworking. In 2005, together with Ariel, he turned his passion for knives into a full-time business, which Marcelo joined in 2013, dedicating himself to the creation of sheaths. 

Renowned for their use of the San Mai technique, which combines aesthetics and functionality, the Sobrals combine creativity, craftsmanship, and dedication, working from their workshop in José León Suárez, near Buenos Aires.

Intended use: Collection

Type of production: handcrafted, entirely handmade
Blade: hand-forged San-Mai laminated steel (1095 core and 420 cheeks), with visible “hamon” — a contrasting effect created during the tempering process, which highlights the boundary of the tempered area where the cutting edge is located.
Blade finish: passivating oxidation
Country of manufacture: Argentina
Handle: Micarta with 420 stainless steel guard
Blade length: 212mm.
Blade thickness: 7 mm.
Total length: 354 mm.
Balance: advanced
Weight: 440 g.
Sheath: leather, entirely hand-stitched and engraved
Notes: knife withdrawn from private collection, previously purchased - unique piece, entirely handmade

The axe has spanned history as a symbol of power, versatility, and innovation. From work tool to fearsome combat weapon, its evolution has accompanied ancient and modern civilizations.

Today, Extrema Ratio pays tribute to this tradition with Estrema, a tactical axe developed for the G.O.I. (Naval Operational Incursors Group), which blends state-of-the-art materials and functional design to meet the most extreme challenges.

Intended Use: Heavy Utility
Production type: Industrial
Country of manufacture: Italy
Blade: full tang in N690Co 54HRC stainless steel
Surface treatment: Dark Stone
Handle: G-10
Blade length: 80mm.
Blade thickness: 6.3mm.
Total length: 374mm.
Balance: advanced
Weight: 777g.
Sheath: kydex, MOLLE compatible
Packaging: technical, airtight, polymer case
Notes: -

Millennial heritage, modern innovation.

From the earliest times, the axe has embodied a duality between work tool and combat tool, evolving over the years to become a symbol of power and versatility. Its use as a work tool dates back to 6,000 B.C., while the earliest documented war use is between 700 and 600 B.C. during Etruscan times, as certified by the Auvele Felùske stele at Vetulonia.

Throughout the world, from Europe to Ancient Egypt to the Far East, the battle axe has been distinguished by its immediate effectiveness in combat, requiring less complex training than other tools but providing decisive performance in close quarters situations. EXTREMA RATIO, an official supplier to the Comsubin, reinterprets this age-old tradition with ESTREMA, a tactical battle axe developed for the G.O.I. (Naval Operational Incursors Group).

With a state-of-the-art design, ESTREMA combines the strength and speed of the historic weapon with technological innovation, offering a versatile and reliable tool for the most demanding missions. Suitable as both a tactical combat tool and a breacher tool, ESTREMA is designed to meet any challenge. The name “ESTREMA” expresses the nature of this model: our most extreme product, the result of our boldest manufacturing experience.

ESTREMA is made of Böhler N690 steel with 54 HRC hardness and dark stone finish. The G10 material handle offers two modes of use: grasping the end section of the handle provides the traditional grip, while a narrower grip encourages close use. The tang, in its end section, can be used as a burglary tool and for cutting and opening metal sheets. In addition, the tapering allows the axe to be used as a lever or crowbar.

ESTREMA can be equipped with a hammer (hammering mass) made of hardened and tempered carbon steel, which engages and disengages from the axe's pike via a snap mechanism with a safety catch to prevent accidental disengagement. This solution, the first of its kind applied in this context, makes the axe even more versatile. The rear hammer is an optional accessory that can be purchased separately.

ESTREMA comes in an innovatively designed airtight technical case, inside of which is also a Kydex sheath and belt clip.

The Kydex sheath, which is ambidextrous, is designed to offer different carrying modes and provide numerous interface options with the operator's equipment. It can be clipped to the belt using the belt clip included in the case, or attached to any MOLLE-equipped platform using a paracord lanyard. Axe retention is ensured by the natural conformation and elasticity of Kydex, supported by a lanyard secured with snaps.

The Selvans S600 Black is a survival knife with total black design, made of Böhler S600 steel with hardness of 64 HRC. Powered by the excellent properties of this steel, it is designed to cope with extreme environments and outdoor operations such as cutting branches and building shelters.

Created through a collaboration between Extrema Ratio and AIGS guide Daniele Dal Canto, Selvans has gained notoriety for its versatility and toughness. The 160 mm, 6.3 mm thick blade is ideal for chopping and batoning operations, providing excellent performance even under heavy loads.

The black forprene handle ensures a secure grip, even with wet hands or gloves. Böhler S600 steel, used in industrial tools, offers wear resistance and holds the edge for a long time thanks to cryogenic treatment and 64 HRC hardness. The EXP DARK coating protects the blade from oxidation, while the Cordura thigh sheath with MOLLE system allows for convenient carrying.

Perfect for hiking, bushcraft and survival situations, the Selvans S600 Black is the ideal companion for any outdoor adventure.

Intended Use: Survival / Heavy Utility

Production Type: Industrial
Country of Production: Italy
Blade: 64HRC Bohler S600 carbon steel
Blade finish: EXP DARK coating
Handle: Forprene
Blade length: 160mm.
Blade thickness: 6.3mm.
Total length: 312mm.
Balance: advanced
Weight: 407g.
Sheath: cordura, M.O.L.L.E. compatible.
Packaging: cardboard box with Extrema Ratio logos
Notes: designed and developed through collaboration with instructor Daniele del Canto

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Withdrawn from a private collection, previously purchased.
* Condition: Like new, never used
* Commercially available: Discontinued
* Sharpening: Factory sharpened
* Marks on blade: None
* Marks on handle: None
* Box: Present and complete
* Scabbard: Present
* Manuals, Certificates and Warranties: Present
* Checked and Certified by our in-house laboratory

PUGIO: The name evokes the historic Roman dagger, but the handle, with its tapered cuttlebone-like shape, also recalls the elegance of Caucasian daggers.

Compact and sharp, this boot dagger is designed as a backup weapon, ideal for defense and perfect for those seeking discretion and portability. The blade, sharpened only on one side, ensures lethal accuracy, while the absence of guards prevents any risk of entanglement in close, high-intensity combat. The rigid scabbard with automatic engagement system and Tek-Lok type attachment allows for unique versatility: it can be positioned horizontally, vertically or tilted at a 45-degree angle, easily adapting to any requirement.

Intended Use: Tactical / CQC

Production type: Industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Blade treatment: Desert Warfare
Handle: Forprene
Blade length: 110mm.
Blade thickness: 6.5mm.
Total length: 225mm.
Weight: 190g.
Sheath: made of ABS, rigid, with Tek-Lok type attachment
Packaging: cardboard box with Extrema Ratio logos
Notes: Single edge version

Extrema Ratio introduces three new color variations of the Shrapnel One model: Total Black, Desert Dark Stone and Black Satin, maintaining the ruggedness and reliability of the original with a stylish twist. This multi-role knife is ideal for bushcraft, outdoor and survival enthusiasts, perfect for both military and contractor activities. The 157 mm fixed blade, made of Böhler N690 steel (58 HRC), offers an optimal balance of hardness and strength, making it perfect for activities such as cutting wood or challenging situations.

The forprene handle provides a secure and comfortable grip, even in difficult conditions, while the full-flat rounded blade ensures excellent cutting power. The design includes a hand guard that enhances safety and ergonomics. The back of the blade features thumb serrations, increasing grip.

The ambidextrous Cordura sheath is durable and secure, featuring a blade lock that ensures safe carrying. With a MOLLE system on both sides, the scabbard can be easily attached to tactical vests and belts, with adjustable height and position for right- and left-handed people. Choose your version and get ready to explore!

Intended Use: Tactical/Military

Production type: Industrial
Country of manufacture: Italy
Blade: stainless steel N690Co hardened to 58HRC
Blade Finish: Dark Stonewashed
Handle: Forprene
Blade length: 157mm.
Blade thickness: 6.3mm. on handle, 4mm. on blade
Total length: 287mm.
Weight: 289g.
Sheath: ambidextrous, cordura, compatible with M.O.L.L.E. system.
Packaging: cardboard box with Extrema Ratio logos
Notes: -

Extrema Ratio introduces three new color variations of the Shrapnel One model: Total Black, Desert Dark Stone and Black Satin, maintaining the ruggedness and reliability of the original with a stylish twist. This multi-role knife is ideal for bushcraft, outdoor and survival enthusiasts, perfect for both military and contractor activities. The 157 mm fixed blade, made of Böhler N690 steel (58 HRC), offers an optimal balance of hardness and strength, making it perfect for activities such as cutting wood or challenging situations.

The forprene handle provides a secure and comfortable grip, even in difficult conditions, while the full-flat rounded blade ensures excellent cutting power. The design includes a hand guard that enhances safety and ergonomics. The back of the blade features thumb serrations, increasing grip.

The ambidextrous Cordura sheath is durable and secure, featuring a blade lock that ensures safe carrying. With a MOLLE system on both sides, the scabbard can be easily attached to tactical vests and belts, with adjustable height and position for right- and left-handed people. Choose your version and get ready to explore!

Intended Use: Tactical/Military

Production type: Industrial
Country of manufacture: Italy
Blade: stainless steel N690Co hardened to 58HRC
Blade Finish: Burnishing MIL-C-13924
Handle: Forprene
Blade length: 157mm.
Blade thickness: 6.3mm. on handle, 4mm. on blade
Total length: 287mm.
Weight: 289g.
Sheath: ambidextrous, cordura, compatible with M.O.L.L.E. system.
Packaging: cardboard box with Extrema Ratio logos
Notes: -

Versa combines innovative design with unparalleled functionality. The name “Versa” perfectly embodies the characteristics of this knife: its versatility makes it suitable for a variety of situations, showing its adaptability both in urban environments as an EDC (Every Day Carry) knife and in more adventurous settings such as outdoor, survival, bushcraft, hunting and even tactical scenarios. It is also ideal as a backup knife. This knife is ready to meet every need by combining style and practicality in one tool. Versa comes in two distinct models: Versa Satin, perfect for everyday use and Versa Expeditions, more suitable in outdoor, survival and bushcraft settings.

Intended Use: Neck Knife / Hiking / Utility

Type of production: industrial
Country of manufacture: Italy
Blade: full tang, stainless steel N690Co at 58HRC
Blade finish: satin finish
Handle: monolithic, pierced, stainless steel N690Co at 58HRC
Blade length: 80mm.
Blade thickness: 6.3mm.
Total length: 180mm.
Weight: 110g.
Sheath: made of Kydex, for neck
Packaging: cardboard box with Extrema Ratio logos
Notes: /

Versa combines innovative design with unparalleled functionality. The name “Versa” perfectly embodies the characteristics of this knife: its versatility makes it suitable for a variety of situations, showing its adaptability both in urban environments as an EDC (Every Day Carry) knife and in more adventurous settings such as outdoor, survival, bushcraft, hunting and even tactical scenarios. It is also ideal as a backup knife. This knife is ready to meet every need by combining style and practicality in one tool. Versa comes in two distinct models: Versa Satin, perfect for everyday use and Versa Expeditions, more suitable in outdoor, survival and bushcraft settings.

Intended Use: Neck Knife / Hiking / Utility

Type of production: industrial
Country of manufacture: Italy
Blade: full tang, stainless steel N690Co at 58HRC
Blade finish: burnishing MIL-C-13924 with Dark Stone finish
Handle: monolithic, pierced, stainless steel N690Co at 58HRC
Blade length: 80mm.
Blade thickness: 6.3mm.
Total length: 180mm.
Weight: 110g.
Sheath: made of Kydex, for neck
Packaging: cardboard box with Extrema Ratio logos
Notes: Firesteel and kydex sheath included in package

The Wander Tactical “Cleaver” is a fixed-blade knife designed for surgical and precision cuts due to its concave sharpening for extreme performance. With a 14cm blade made of D2 steel, known for its excellent edge retention and wear resistance, this knife is designed to last and withstand the harshest conditions.

What makes this model particularly special is that it falls under the all-custom versions for both knife and sheath. The blade is custom made, with custom details according to the flair of craftsman Dino Picco. The handle, made of Zebrano wood ensures a firm and comfortable grip and is extremely ergonomic. The leather sheath, also handmade by Dino, is designed to be functional and durable with a retro look.

Use: Heavy Duty / Collection

Type of production: Handcrafted
Country of Production: Italy
Blade: D2 steel at 59/60HRC
Blade Finish: Marble
Handle: Zebrano wood
Blade length: 140mm.
Blade thickness: 6.5mm.
Total length: 265mm.
Balance: backward
Weight: 469g.
Scabbard: interamento leather handmade by Dino Picco
Package: certificate of guarantee and authenticity
Notes: Custom Special Edition

The FULCRUM is a milestone among multi-role knives.

Deployed on a large scale in Afghanistan as standard equipment by components of the Italian "Nibbio" mission, it is part of an experimental individual equipment renewal project undertaken by the Alpine Troops Command. During the preparation for this important mission, Alpine Troops Command coordinated a team of companies in the production of a complete and renewed experimental individual equipment.

The FULCRUM is an extremely robust and versatile knife.
The blade can withstand breaking loads in excess of 150 kilograms, the tip is extremely strong and the tanto profile allows the knife to be worked on for a long time without affecting the sharpness of the last section.
The advanced center of gravity and weight of the blade make it suitable for heavy field work.

Intended use: tactical/military/multipurpose

Type of production: industrial
Country of manufacture: Italy
Blade: stainless steel N690Co
Blade finish: burnishing MIL-C-13924
Handle: forprene, removable
Blade length: 180mm.
Blade thickness: 6.3mm.
Total length: 213mm.
Weight: 325g.
Sheath: modular tactical, thigh or belt, made of Nylon and polymers
Packaging: cardboard box with Extrema Ratio logos
Notes: -

Compact version of the CONTACT, the CONTACT C has a spearhead blade, in Böhler N690 steel with a hardness of 58 HRC, flat edge, lower guard branch and full-length lightening release.

The Forprene handle with locking by threaded tang makes the knife solid and well balanced.

The MOLLE compatible sheath is made of shockproof nylon with a system that avoids shaking noises, is equipped with a two-button safety flap, a thigh with anti-rotation rubber reinforcement and a reversible ambidextrous 2nd level retention system: the simple pressure on the trigger unlocks the blade.

Intended use: Tactical / Backup

Type of production: Industrial
Country of production: Italy
Blade: in N690Co 58HRC stainless steel
Blade treatment: Stonewashed
Handle: Forprene
Blade length: 128mm.
Blade thickness: 6.3mm.
Total length: 258mm.
Weight: 373g.
Sheath: Nylon
Packaging: Cardboard box with Extrema Ratio logos
Note: -

ExtremaRatio - Dobermann IV Knife - S600 - Tactical Black represents the evolution of the first and most classic Extrema Ratio model, the K1 DOBERMANN. Since 1997, the DOBERMANN model has undergone significant aesthetic and design changes, adapting to the evolution of tastes and trends while remaining true to the original designs. Versatility of use and structural resistance are the main characteristics of DOBERMANN IV S600, making it ideal for hunting, survival, camping, and military use.

• • Type: Tactical / Collection
  • Blade Production: Italy
  • Blade: Stainless steel S600 64hrc
  • Blade Treatment: EXP DARK
  • Handle: Forprene
  • Blade Length: 185mm
  • Blade Thickness: 6.3mm
  • Total Length: 315mm
  • Weight: 360g
  • Sheath: Cordura with M.O.L.L.E attachments
  • Packaging: Cardboard box with Extrema Ratio logos

The blade of the DOBERMANN IV S600, made from Böhler S600 steel, offers excellent hardness, wear resistance, and toughness, thanks to the high content of molybdenum, tungsten, and vanadium. The addition of cobalt promotes the formation of small carbides, further improving wear resistance. With a hardness of 64 HRC, it ensures long-lasting edge retention. The “EXP DARK” teflon coating protects the steel from oxidation.

DOBERMANN IV S600 features a green forprene handle with a glass-breaking tang. It comes with a green cordura thigh sheath, adaptable for both left and right-handed users and compatible with the M.O.L.L.E system.

Intended Use: Excursionism / Heavy Duty

Type of production: Handcrafted
Country of Production: Italy
Blade: D2 steel at 59/61HRC
Blade Finish: Black
Handle: Micarta
Blade Length: 140mm.
Blade thickness: 6.3mm.
Total length: 257mm.
Balance: advanced
Weight: 433g.
Sheath: leather, handcrafted
Packaging: certificate of guarantee and authenticity
Notes: Each knife is unique and handcrafted in every part

Intended use: hiking / Survivalism

Type of production: industrial
Country of manufacture: Italy
Blade: stainless steel N690Co 58HRC
Blade treatment: Dark Stone
Handle: anticorodal of 4.5mm
Blade length: 115mm.
Blade thickness: 6.3mm.
Length closed: 142
Total length: 262mm.
Weight: 330g.
Closure: modified front lock - threaded safety pin
Sheath: tactical Nylon with M.O.L.L.E. attachments suitable for both closed and open knife
Notes: diamond sharpener and fire starter included

Sethlans Expeditions, as well as the Sethlans model from which it derives, is a fixed blade work knife designed to deal with a wide range of situations, but also as a backup blade. The Sethlans Expeditions has been designed in collaboration with Daniele Dal Canto, Master Advanced F.I.S.S. (Federazione italiana survival sportivo e sperimentale) instructor.

Sethlans Expeditions has a Böhler N690 steel blade heat treated to 58 HRC with MIL-C-13924 burnishing and stone washed surface treatment (Dark Stone finish). The knife comes with desert colored G10 grips that feature the ergonomic design characteristic of Extrema Ratio handles. They can be removed to free the skeleton structure of the knife, allowing maximum lightness with minimum thickness.

For lovers of extreme customization, the full-tang structure allows the handle to be covered with paracord. The sheath is composed of a very light and minimalist Kydex part. It can be disassembled and can be adapted to both left- and right-handed people. The addition of an optional belt clip allows both vertical and horizontal positioning of the knife and makes the sheath much more versatile than the textile version. It is equipped with a mini pouch with M.O.L.L.E. system containing paracord with flammable filament to be used in case of emergency and/or critical weather conditions and a Firesteel for lighting fires.

Intended use: Survival / Bushcraft / Utility

Production type: Industrial
Country of Production: Italy
Blade: full tang in stainless steel N690Co 58HRC
Blade Finish: Burnishing MIL-C-13924 with Dark Stone finish
Handle: G-10
Blade length: 107mm.
Blade thickness: 6.3mm.
Total length: 224mm.
Weight: 207g.
Sheath: Kydex and cordura, M.O.L.L.E. compatible.
Package: Cardboard box with Extrema Ratio logos.
Notes: Designed and developed thanks to the collaboration with the instructor Daniele del Canto of F.I.S.S.S. (Federazione Italiana Survival Spotivo e Sperimentale).

Selvans Expeditions, as well as the Selvans model from which it derives, was born from the collaboration between Extrema Ratio and the Master instructor F.I.S.S. (Federazione Italiana Survival Sportivo e Sperimentale) Daniele Dal Canto. This tool is the result of the modification of the ONTOS, military survival knife, realized in order to accentuate and maximize the performance of the knife.

Selvans Expeditions uses Böhler N690 steel heat treated to 58 HRC with MIL-C-13924 burnishing and stone washed surface treatment (Dark Stone finish). The handle has been lengthened and the blade weighted to promote effective cutting strokes. It comes with a desert Cordura sheath with MOLLE system, equipped with a mini pouch containing paracord with flammable filament that can be used in case of emergency and/or critical weather conditions and a Firesteel for lighting fires.

The survival kit (not included and purchasable separately) has been optimized and includes whistle, chainsaw, drinking pads, compass, brass wire, flintlock, flashlight, paracord 2,5 mt. and sharpener.

Intended use: Survival / Heavy Utility

Production type: Industrial
Country of Production: Italy
Blade: Stainless steel N690Co 58HRC
Blade Finish: Burnishing MIL-C-13924 with Dark Stone finish
Handle: Forprene
Blade length: 160mm.
Blade thickness: 6.3mm.
Total length: 312mm.
Balance: Advanced
Weight: 430g.
Sheath: Cordura, M.O.L.L.E. compatible.
Package: Cardboard box with Extrema Ratio logos
Notes: Designed and developed thanks to the collaboration with the instructor Daniele del Canto of F.I.S.S.S. (Federazione Italiana Survival Spotivo e Sperimentale).

Kreios Expeditions, as well as the Kreios model from which it derives, has been designed and developed thanks to the collaboration with the Master instructor F.I.S.S. (Federazione Italiana Survival Sportivo e Sperimentale) Daniele Dal Canto. It is defined by its creator as a sort of "off the road" of cutting tools, therefore not a specific disposable tool, but a multi-tasking tool, extremely versatile and designed to cope with many uses.

Thanks to its ergonomics, weight and size, Kreios Expeditions is suitable to open gaps in the thick vegetation, especially where it is necessary to take distance, for safety reasons, from thorny or harmful essences. Thanks to its robustness, it is an effective machete even in the heaviest field work. Combining the 32 cm of the "full flat" cutting edge, the 11° forward inclination of the blade and the 630 gr. of its weight, you get a tool with extraordinary cutting capabilities that does not fear bending.

Kreios Expeditions brings modern geometry and materials combined with the lines and effectiveness of blades typical of the Malaysian and African tradition, creating an ideal tool for field work but also, if necessary, for defense/offense. Kreios Expeditions is equipped with a desert color forprene handle and a BÖHLER N690 (58HRC) steel blade with MIL-C-13924 burnishing and stone washed surface finish (Dark Stone finish). It is supplied with a desert Cordura sheath with MOLLE system and strap for safety carry, equipped with a mini pouch containing paracord with flammable filament to be used in case of emergency and/or critical weather conditions and a Firesteel for lighting fires.

Intended Use: Chopper / Machete / Heavy Utility

Production type: Industrial
Country of Production: Italy
Blade: Stainless steel N690Co 58/60HRC
Blade Finish: Burnishing MIL-C-13924 with Dark Stone finish
Handle: Forprene
Blade Length: 324mm.
Blade thickness: 6.3mm.
Total length: 476mm.
Weight: 642g.
Sheath: Cordura, M.O.L.L.E. compatible.
Package: Cardboard box with Extrema Ratio logos.
Notes: Designed and developed thanks to the collaboration with the instructor Daniele del Canto of F.I.S.S.S. (Federazione Italiana Survival Spotivo e Sperimentale).

DMP is a multi-role knife characterized by a strong versatility of use thanks to the small dimensions. The drop point blade with reinforced tip is particularly useful for heavy duty use. The full flat rounding gives excellent cutting characteristics.

The sheath is minimalist, stripped of most of the fabric adopting a retention system of 2nd level, going to recall the style of the model to which it is inspired. The main shell is made by injection in shockproof nylon. The secondary retention system is reversible for the ambidextrous portability of the knife.

Intended Use: Tactical / Multi-role

Production type: Industrial
Country of Production: Italy
Blade: Stainless steel N690Co 58HRC
Blade Treatment: Burnishing MIL-C-13924
Handle: Forprene
Blade length: 152mm.
Blade thickness: 6.3mm.
Total length: 282mm.
Weight: 283g.
Sheath: Nylon
Packaging: Cardboard box with Extrema Ratio logos.
Notes: -

DMP is a multi-role knife characterized by a strong versatility of use thanks to the small dimensions. The blade, drop point shape with reinforced tip, is particularly useful for heavy duty use. The full flat rounding gives excellent cutting characteristics.

The sheath is minimalist, stripped of most of the fabric adopting a retention system of 2nd level, going to recall the style of the model to which it is inspired. The main shell is made by injection in shockproof nylon. The secondary retention system is reversible for the ambidextrous portability of the knife.

Intended Use: Tactical / Multi-role

Production type: Industrial
Country of Production: Italy
Blade: Stainless steel N690Co 58HRC
Blade Treatment: Stone Washed
Handle: Forprene
Blade length: 152mm.
Blade thickness: 6.3mm.
Total length: 282mm.
Weight: 283g.
Scabbard: Nylon
Packaging: Cardboard box with Extrema Ratio logos.
Notes: -

DMP is a multi-role knife characterized by a strong versatility of use thanks to the small dimensions. The blade, drop point shape with reinforced tip, is particularly useful for heavy duty use. The full flat rounding gives excellent cutting characteristics.

The sheath is minimalist, stripped of most of the fabric adopting a retention system of 2nd level, going to recall the style of the model to which it is inspired. The main shell is made by injection in shockproof nylon. The secondary retention system is reversible for the ambidextrous portability of the knife.

Intended Use: Tactical / Multi-role

Production type: Industrial
Country of Production: Italy
Blade: Stainless steel N690Co 58HRC
Blade Treatment: Stone Washed
Handle: Forprene
Blade length: 152mm.
Blade thickness: 6.3mm.
Total length: 282mm.
Weight: 283g.
Scabbard: Nylon
Packaging: Cardboard box with Extrema Ratio logos.
Notes: -

DMP is a multi-role knife characterized by a strong versatility of use thanks to the small dimensions. The blade, drop point shape with reinforced tip, is particularly useful for heavy duty use. The full flat rounding gives excellent cutting characteristics.

The sheath is minimalist, stripped of most of the fabric adopting a retention system of 2nd level, going to recall the style of the model to which it is inspired. The main shell is made by injection in shockproof nylon. The secondary retention system is reversible for the ambidextrous portability of the knife.

Intended Use: Tactical / Multi-role

Production type: Industrial
Country of Production: Italy
Blade: Stainless steel N690Co 58HRC
Blade Treatment: Stone Washed
Handle: Forprene
Blade length: 152mm.
Blade thickness: 6.3mm.
Total length: 282mm.
Weight: 283g.
Scabbard: Nylon
Packaging: Cardboard box with Extrema Ratio logos.
Notes: -

ERMES is the commemorative knife developed in collaboration with the Special Operations Helicopter Regiment (R.E.O.S.) which is part of the Army Aviation Command.

The R.E.O.S. is the operational unit of helicopters in support of special forces composed of personnel specifically trained and equipped to support military activities in any operational context.

The stylized guards of the knife represent the wings present in the heraldic coat of arms of the unit. The steel used is the reliable Bölher N690Co heat treated to 58 HRC. Fiber Reinforced Nylon (FRN) polyamide polymer was chosen for the handle. The hybrid Kydex and fabric sheath is equipped with belt or harness attachment with MOLLE interface system.

It is available in two versions:
"ERMES SATIN ORDINANZA" with satin finish blade and ABS case.
"ERMES BLACK OPERATIVO", with the burnished blade.

Intended use: Collection / Tactical

Production type: Industrial
Country of Production: Italy
Blade: Stainless steel N690Co 58HRC
Blade Treatment: Satin finish
Handle: FRN (Fiberglass Reinforced Nylon)
Blade length: 140mm.
Blade thickness: 6.3mm.
Total length: 256mm.
Weight: 229g.
Sheath: Kydex and Fabric with MOLLE type hooking system.
Package: Commemorative case in ABS with the logos of the department
Notes: Commemorative knife developed in collaboration with the Regiment Helicopters for Special Operations (R.E.O.S.)

ERMES is the commemorative knife developed in collaboration with the Special Operations Helicopter Regiment (R.E.O.S.) which is part of the Army Aviation Command.

The R.E.O.S. is the operational unit of helicopters in support of special forces composed of personnel specifically trained and equipped to support military activities in any operational context.

The stylized guards of the knife represent the wings present in the heraldic coat of arms of the unit. The steel used is the reliable Bölher N690Co heat treated to 58 HRC. Fiber Reinforced Nylon (FRN) polyamide polymer was chosen for the handle. The hybrid Kydex and fabric sheath is equipped with belt or harness attachment with MOLLE interface system.

It is available in two versions:
"ERMES SATIN ORDINANZAR" with satin finish blade and ABS case.
"ERMES BLACK OPERATIVO", with the burnished blade.

Intended use: Collection / Tactical

Production type: Industrial
Country of Production: Italy
Blade: Stainless steel N690Co 58HRC
Blade Treatment: Burnishing Mil-C-13924
Handle: FRN (Fiberglass Reinforced Nylon)
Blade length: 140mm.
Blade thickness: 6.3mm.
Total length: 256mm.
Weight: 229g.
Sheath: Kydex and Fabric with MOLLE type hooking system.
Packaging: Cardboard box with Extrema Ratio logos.
Notes: Commemorative knife developed in collaboration with the Regiment Helicopters for Special Operations (R.E.O.S.)

The Herring dagger is one of the most loved military knives by enthusiasts.

Its original name is Fairbairn Sykes or Commando Dagger and it was present in the endowment of the British Commandos.

A dagger that entered Italian history in World War II, thanks to the exploits of young soldiers of the 1st "Folgore" Reconnaissance Squadron, who were equipped with this weapon during Operation Herring. He has behind him a heroic piece of history that is rarely talked about, despite the fact that these young boys, thanks to their devotion to the cause and their courage, have written an important page in Italian history.

Extrema Ratio wanted to pay homage to this dagger trying to remain faithful to the original forms, while using the most modern production techniques.

The very special hand-made finish of the handle simulates the aging of brass and gives the dagger a dated look, similar to the original.

The dagger was developed in collaboration with the 185th RAO and adopted as a ceremonial commemorative dagger for the 20th anniversary of the regiment's establishment and the 75th anniversary of the Herring mission.

The knife is equipped with a polymer case with historical frieze of the F Squadron, leather / kydex sheath with brass tip and two commemorative scrolls.

PLEASE NOTE:
NE version, simulacrum replica with rounded tip and blunt blade, to allow free sale and possession according to the current regulations in force on the Italian territory.

We warn that any subsequent modifications and sharpening made to the blade modify the status of simulacrum of the Herring NE. In this case it will be subject to the regulations in force in the respective countries. Furthermore, these changes will void the Extrema Ratio warranty.

Intended use: Collection / Tactical

Type of production: Industrial
Country of production: Italy
Blade: not sharp, in stainless steel N690Co 58HRC
Blade treatment: Burnishing MIL-C-13924
Handle: Aged brass
Blade length: 167mm.
Blade thickness: 6.3mm.
Total length: 289mm.
Weight: 276g.
Sheath: leather, ABS and brass sheath
Packaging: Polymer case with historical frieze of Squadron F and 2 commemorative scrolls
Note: -

The "Extrema Ratio Sethlans" is a fixed blade work knife created to face a wide range of situations, suitable for survival, bushcraft, prepping, but also as a backup blade. The Sethlans is available in two versions with two different types of steel.

Black version that uses D2 steel, heat treated and cryogenically treated at 60 HRC, which has a high resharpening capacity even with makeshift tools. To give greater qualities of hardness and resistance, the blade is coated with the new Teflon-based product "EXP DARK", proposed by Extrema Ratio.

The knife comes with G10 grips that feature the ergonomic design characteristic of Extrema Ratio handles. They can be removed by releasing the skeletonized structure of the knife, which allows maximum lightness with minimum thickness. For lovers of extreme customization, the full-tang structure allows the handle to be covered with a paracord cord.

The sheath is composed of a part in very light and minimalist Kydex. It can be disassembled and can be adapted for both left and right handed users. The addition of an optional belt clip allows the knife to be positioned both vertically and horizontally and makes the sheath much more versatile than the textile version. It is also equipped with a mini pouch with M.O.L.L.E. system. containing a double-sided stone for sharpening and a firesteel for lighting fires.

Intended use: Hiking / Bushcraft

Country of Production: Italy
Type: Fixed Blade
Blade length: 107mm
Total length: 224mm
Blade thickness: 6.3mm
Sharpening: Flat edge
Weight: 207g
Blade Material: D2 Steel (60HRC)
Blade finish: Teflon-based Exp Dark
Handle: G10
Notes: designed in collaboration with Daniele Dal Canto, Master Advanced F.I.S.S.S. (Italian Federation of Sports and Experimental Survival).

The "Extrema Ratio Sethlans" is a fixed blade work knife created to face a wide range of situations, suitable for survival, bushcraft, prepping, but also as a backup blade. The Sethlans is available in two versions with two different types of steel.

Stone Washed version that uses Böhler N690 heat treated at 58 HRC, chosen for the reliability it has shown over the last 20 years due to its resistance to oxidation and durability of the wire.

The knife comes with G10 grips that feature the ergonomic design characteristic of Extrema Ratio handles. They can be removed by releasing the skeletonized structure of the knife, which allows maximum lightness with minimum thickness. For lovers of extreme customization, the full-tang structure allows the handle to be covered with a paracord cord.

The sheath is composed of a part in very light and minimalist Kydex. It can be disassembled and can be adapted for both left and right handed users. The addition of an optional belt clip allows the knife to be positioned both vertically and horizontally and makes the sheath much more versatile than the textile version. It is also equipped with a mini pouch with M.O.L.L.E. system. containing a double-sided stone for sharpening and a firesteel for lighting fires.

Intended use: Hiking / Bushcraft

Country of Production: Italy
Type: Fixed Blade
Use: Survival, bushcraft, prepping
Blade length: 107mm
Total length: 224mm
Blade thickness: 6.3mm
Sharpening: Flat edge
Weight: 207 g
Blade Material: Böhler N690Co Steel (58HRC)
Blade Finish: Stone Washed
Handle: G10
Notes: designed in collaboration with Daniele Dal Canto, Master Advanced F.I.S.S.S. (Italian Federation of Sports and Experimental Survival).

The Extrema Ratio Frame Rock is a new knife, based on the Ti-Rock project, a successful frame-lock knife made by Extrema Ratio in 2016 exclusively for Coltelleria Collini.

The Extreme Ratio Frame Rock is characterized by the titanium handle that offers great resistance while being very light. The integrity of the frame-lock locking system is guaranteed against wear by an easily replaceable hardened steel insert.

Unlike its drop-point predecessor, the Rock frame has a spearpoint blade 75 mm long, 6.0 mm thick, equipped with fuller for further lightening. The blade is made of Bohler N690 steel, heat treated to a hardness of 58 HRC. The same is available in black finish with DLC or satin finish.

To make the opening even more fluid and free of uncertainties, the blade rotates on ball bearings. This mechanism allows the user to adjust the force necessary to release the blade from the closed position.

The shape of the reversible clip allows a hidden port in the pocket, making the knife not visible from the outside. The large, solid handle and the well-proportioned blade allow this knife to tackle demanding tasks. Frame Rock weighs less than 200g, making it somewhat light for such a sturdy knife. It is supplied inside an ABS box.

Intended use: collection / CQD

Type of production: industrial
Blade: in N690Co stainless steel
Blade treatment: Black DLC
Country of production: Italy
Handle: in Titanium, machined from solid, with integral Frame Lock closure system with removable hinged and safe made of stainless steel
Blade length: 75mm.
Blade thickness: 6.3mm.
Total length: 181mm.
Weight: 193g.
Clip: stainless steel, reversible, deep pocket type and with tip up port
Notes: Conical Skull Crasher inserted in the shank
Box: in ABS with Extrema Ratio logos

The Extrema Ratio Frame Rock is a new knife, based on the Ti-Rock project, a successful frame-lock knife made by Extrema Ratio in 2016 exclusively for Coltelleria Collini.

The Extreme Ratio Frame Rock is characterized by the titanium handle that offers great resistance while being very light. The integrity of the frame-lock locking system is guaranteed against wear by an easily replaceable hardened steel insert.

Unlike its drop-point predecessor, the Rock frame has a spearpoint blade 75 mm long, 6.0 mm thick, equipped with fuller for further lightening. The blade is made of Bohler N690 steel, heat treated to a hardness of 58 HRC. The same is available in black finish with DLC or satin finish.

To make the opening even more fluid and free of uncertainties, the blade rotates on ball bearings. This mechanism allows the user to adjust the force necessary to release the blade from the closed position.

The shape of the reversible clip allows a hidden port in the pocket, making the knife not visible from the outside. The large, solid handle and the well-proportioned blade allow this knife to tackle demanding tasks. Frame Rock weighs less than 200g, making it somewhat light for such a sturdy knife. It is supplied inside an ABS box.

Intended use: collection / CQD

Type of production: industrial,
Blade: in N690Co stainless steel
Blade treatment: Satin finish
Country of production: Italy
Handle: in Titanium, machined from solid, with integral Frame Lock closure system with removable hinged and safe made of stainless steel
Blade length: 75mm.
Blade thickness: 6.3mm.
Total length: 181mm.
Weight: 193g.
Clip: stainless steel, reversible, deep pocket type and with tip up port
Notes: Conical Skull Crasher inserted in the shank
Box: in ABS with Extrema Ratio logos

Compact version of the CONTACT, the CONTACT C has a spearhead blade, in Böhler N690 steel with a hardness of 58 HRC, flat edge, lower guard branch and full-length lightening release.

The Forprene handle with locking by threaded tang makes the knife solid and well balanced.

The MOLLE compatible sheath is made of shockproof nylon with a system that avoids shaking noises, is equipped with a two-button safety flap, a thigh with anti-rotation rubber reinforcement and a reversible ambidextrous 2nd level retention system: the simple pressure on the trigger unlocks the blade.

Intended use: Tactical / Backup

Type of production: Industrial
Country of production: Italy
Blade: in N690Co 58HRC stainless steel
Blade treatment: Stonewashed
Handle: Forprene
Blade length: 128mm.
Blade thickness: 6.3mm.
Total length: 258mm.
Weight: 373g.
Sheath: Nylon
Packaging: Cardboard box with Extrema Ratio logos
Note: -

Compact version of the CONTACT, the CONTACT C has a spearhead blade, in Böhler N690 steel with a hardness of 58 HRC, flat edge, lower guard branch and full-length lightening release.

The Forprene handle with locking by threaded tang makes the knife solid and well balanced.

The MOLLE compatible sheath is made of shockproof nylon with a system that avoids shaking noises, is equipped with a two-button safety flap, a thigh with anti-rotation rubber reinforcement and a reversible ambidextrous 2nd level retention system: the simple pressure on the trigger unlocks the blade.

Intended use: Tactical / Backup

Type of production: Industrial
Country of production: Italy
Blade: in N690Co 58HRC stainless steel
Blade treatment: Stonewashed
Handle: Forprene
Blade length: 128mm.
Blade thickness: 6.3mm.
Total length: 258mm.
Weight: 373g.
Sheath: Nylon
Packaging: Cardboard box with Extrema Ratio logos
Note: -

Compact version of the CONTACT, the CONTACT C has a spearhead blade, in Böhler N690 steel with a hardness of 58 HRC, flat edge, lower guard branch and full-length lightening release.

The Forprene handle with locking by threaded tang makes the knife solid and well balanced.

The MOLLE compatible sheath is made of shockproof nylon with a system that avoids shaking noises, is equipped with a two-button safety flap, a thigh with anti-rotation rubber reinforcement and a reversible ambidextrous 2nd level retention system: the simple pressure on the trigger unlocks the blade.

Intended use: Tactical / Backup

Type of production: Industrial
Country of production: Italy
Blade: in N690Co 58HRC stainless steel
Blade treatment: Mil-C-13924 burnishing
Handle: Forprene
Blade length: 128mm.
Blade thickness: 6.3mm.
Total length: 258mm.
Weight: 273g.
Sheath: Nylon
Packaging: Cardboard box with Extrema Ratio logos
Note: -

Intended use: Tactical / Multirole

Type of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Blade treatment: Stone Washed
Handle: Forprene
Blade length: 162mm.
Blade thickness: 6.3mm.
Total length: 293mm.
Weight: 300g.
Sheath: in Nylon
Packaging: Cardboard box with Extrema Ratio logos
Note: -

Extrema Ratio developed the first knife of a new production line, called CONTACT.

It has a blade with a lance-shaped profile, a flat grinding and a diamond-shaped geometry. It has got a lower guard branch to protect itself from incidental cuts, upper jumping to improve grip, concave fuller along the length of the blade and a generous thickness blade (6.30mm) the now famous Requiem, revisited in proportions and in some technical features. The first of a new line of multipurpose knives.

The blade is made in Böhler N690 steel with a hardness of 58 HRC and a chemical burnishing coating for the Black version. All other colors in production have got a blade with Stone Washed finishing. The handle is still in forprene. It is more assembled by the side screws but thanks to the shank in truncated cone-shaped stainless steel that is screwed to the bottom and goes to fit inside a special seat, which makes it solid. In this way the knife is well balanced. The sheath is minimalist; most of the fabric has been cut off; it has got a 2nd level retention system, remembering the style of the model it was inspired by.

The main shell is injection-molded in shockproof nylon. The secondary retention system is reversible for ambidextrous users. The blade is guided through the conception of the blade. To extract the blade, to pressure the trigger will be sufficient, thus releasing the safety that holds securely in the sheath. In the horizontal slits of the sheath of a system, which fixes the blade to avoid shaking noises when it is stored inside. The back side of the nylon sheath is M.O.L.L.E. compatible.

The textile part is reduced to its minimum and has got the classic two-button safety strap with a belt loop Extrema Ratio aims to reduce the size of the knife, but not saving on the structural strength and safety accessories.

so be used as glass breakers

Intended use: Tactical / Multirole

Type of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Blade treatment: Stone Washed
Handle: Forprene
Blade length: 162mm.
Blade thickness: 6.3mm.
Total length: 293mm.
Weight: 300g.
Sheath: in Nylon
Packaging: Cardboard box with Extrema Ratio logos
Note: -

Extrema Ratio developed the first knife of a new production line, called CONTACT.

It has a blade with a lance-shaped profile, a flat grinding and a diamond-shaped geometry. It has got a lower guard branch to protect itself from incidental cuts, upper jumping to improve grip, concave fuller along the length of the blade and a generous thickness blade (6.30mm) the now famous Requiem, revisited in proportions and in some technical features. The first of a new line of multipurpose knives.

The blade is made in Böhler N690 steel with a hardness of 58 HRC and a chemical burnishing coating for the Black version. All other colors in production have got a blade with Stone Washed finishing. The handle is still in forprene. It is more assembled by the side screws but thanks to the shank in truncated cone-shaped stainless steel that is screwed to the bottom and goes to fit inside a special seat, which makes it solid. In this way the knife is well balanced. The sheath is minimalist; most of the fabric has been cut off; it has got a 2nd level retention system, remembering the style of the model it was inspired by.

The main shell is injection-molded in shockproof nylon. The secondary retention system is reversible for ambidextrous users. The blade is guided through the conception of the blade. To extract the blade, to pressure the trigger will be sufficient, thus releasing the safety that holds securely in the sheath. In the horizontal slits of the sheath of a system, which fixes the blade to avoid shaking noises when it is stored inside. The back side of the nylon sheath is M.O.L.L.E. compatible.

The textile part is reduced to its minimum and has got the classic two-button safety strap with a belt loop Extrema Ratio aims to reduce the size of the knife, but not saving on the structural strength and safety accessories.

so be used as glass breakers

Intended use: Hiking / Hunting

Type of production: industrial
Origin: Lama: Japan
Blade: full tang, in CoS 60HRC laminated stainless steel
Blade treatment: Tungsten Carbide
Handle: Thermorun
Blade length: 160mm.
Blade thickness: 7mm.
Total length: 280mm.
Balancing: advanced at 0.5cm. from the lower guard branch
Weight: 400g.
Closing: -
Sheath: in zytel
Note: -

Intended use: Tactical / Multirole

Type of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Blade treatment: Stone Washed
Handle: Forprene
Blade length: 162mm.
Blade thickness: 6.3mm.
Total length: 293mm.
Weight: 300g.
Sheath: in Nylon
Packaging: Cardboard box with Extrema Ratio logos
Note: -

Extrema Ratio developed the first knife of a new production line, called CONTACT.

It has a blade with a lance-shaped profile, a flat grinding and a diamond-shaped geometry. It has got a lower guard branch to protect itself from incidental cuts, upper jumping to improve grip, concave fuller along the length of the blade and a generous thickness blade (6.30mm) the now famous Requiem, revisited in proportions and in some technical features. The first of a new line of multipurpose knives.

The blade is made in Böhler N690 steel with a hardness of 58 HRC and a chemical burnishing coating for the Black version. All other colors in production have got a blade with Stone Washed finishing. The handle is still in forprene. It is more assembled by the side screws but thanks to the shank in truncated cone-shaped stainless steel that is screwed to the bottom and goes to fit inside a special seat, which makes it solid. In this way the knife is well balanced. The sheath is minimalist; most of the fabric has been cut off; it has got a 2nd level retention system, remembering the style of the model it was inspired by.

The main shell is injection-molded in shockproof nylon. The secondary retention system is reversible for ambidextrous users. The blade is guided through the conception of the blade. To extract the blade, to pressure the trigger will be sufficient, thus releasing the safety that holds securely in the sheath. In the horizontal slits of the sheath of a system, which fixes the blade to avoid shaking noises when it is stored inside. The back side of the nylon sheath is M.O.L.L.E. compatible.

The textile part is reduced to its minimum and has got the classic two-button safety strap with a belt loop Extrema Ratio aims to reduce the size of the knife, but not saving on the structural strength and safety accessories.

so be used as glass breakers

Intended use: Tactical / Multirole

Type of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Blade treatment: Brunishing Mil-C-13924
Handle: Forprene
Blade length: 162mm.
Blade thickness: 6.3mm.
Total length: 293mm.
Weight: 300g.
Sheath: in Nylon
Packaging: Cardboard box with Extrema Ratio logos
Note: -

Extrema Ratio developed the first knife of a new production line, called CONTACT.

It has a blade with a lance-shaped profile, a flat grinding and a diamond-shaped geometry. It has got a lower guard branch to protect itself from incidental cuts, upper jumping to improve grip, concave fuller along the length of the blade and a generous thickness blade (6.30mm) the now famous Requiem, revisited in proportions and in some technical features. The first of a new line of multipurpose knives.

The blade is made in Böhler N690 steel with a hardness of 58 HRC and a chemical burnishing coating for the Black version. All other colors in production have got a blade with Stone Washed finishing. The handle is still in forprene. It is more assembled by the side screws but thanks to the shank in truncated cone-shaped stainless steel that is screwed to the bottom and goes to fit inside a special seat, which makes it solid. In this way the knife is well balanced. The sheath is minimalist; most of the fabric has been cut off; it has got a 2nd level retention system, remembering the style of the model it was inspired by.

The main shell is injection-molded in shockproof nylon. The secondary retention system is reversible for ambidextrous users. The blade is guided through the conception of the blade. To extract the blade, to pressure the trigger will be sufficient, thus releasing the safety that holds securely in the sheath. In the horizontal slits of the sheath of a system, which fixes the blade to avoid shaking noises when it is stored inside. The back side of the nylon sheath is M.O.L.L.E. compatible.

The textile part is reduced to its minimum and has got the classic two-button safety strap with a belt loop Extrema Ratio aims to reduce the size of the knife, but not saving on the structural strength and safety accessories.

so be used as glass breakers

S.E.R.E. 2, adopted by the Operational Group of Italian Navy Incursors, is the development of the S.E.R.E. 1, created by a study group composed of Special Forces operators, martial artists and experts in survival techniques. This variant 2 has been revised according to the needs expressed by the Department.

The acronym S.E.R.E. refers to the four principles "Survival, Evasion, Resistance and Escape" which make up the training program provided to military personnel at high risk of capture.

The S.E.R.E. 2 is suitable for both tip and cut use. The unique grip, unlike the classic blades of this type, is fixed between the index and the middle, thus forming a single axis from the tip of the blade to the user's wrist, allowing its use also in reverse grip. The handle has the same ergonomics as the butt of a firearm; this grip allows an instinctive and immediate use, being able to easily integrate the training in the training activity.

The geometry of the tip ensures maximum penetration, at the same time its axial profile with a triangular base protects its resistance. The design of the blade has on one side a partially serrated profile to favor the cutting of cordages, and on the other hand a classic cut or straps that, unlike the previous model, has re-sharpening and interchangeable blades.

The central loop, which has the dual function of lightening and turn-crickets, recalls the maritime origins of its creators. The peculiarity of the knife is that it has been specifically designed to be used even without the handle; the two holes in the part dedicated to the handle facilitate assembly.

The kydex sheath has a basic retention that can be used alone for operators who need extremely fast knife use, and a removable locking lock if necessary. The knife is supplied with double safety for ambidextrous mounting. An insert with a flat-blade screwdriver is available as an accessory. Comes with belt clip for belt fastening and paracord for fixing on the M.O.L.L.E. system.

"Using the gun, knife or other weapon for us is the same thing: it's just the extension of the hand." Quote from a commander of the ward.

Intended use: Tactical / Military / Rescue

Type of production: Industrial
Lama production: Italy
Blade: stainless steel N690Co 58HRC
Blade treatment: Burnishing MIL-C-13924
Handle: Forprene
Blade length: 148mm.
Blade thickness: 6.3mm.
Total length: 217mm.
Thickness when closed: -
Weight: 306g.
Sheath: In Kydex, with Tek-Lok hooking system
Packaging: Cardboard box with Extrema Ratio logos
Note: -

The particular situation created in the early years of the 1914/18 war, now mired in increasingly complex and protected trenches and fortifications, favored the formation of men who, little by little, specialized in the coup.

Our assault units, the Arditi, had their dagger. It was obtained from the pieces cut away by the long blades of the Vetterli 1870 bayonets, which in the narrow trenches, in the corridors, between the reticulars were only an obstacle. It was certainly a rustic weapon, of recovery, not too beautiful but certainly inexpensive, light, not cumbersome and in expert hands also effective.

Today, on the occasion of the centenary, we remember this important page of Italian military history with a limited series of celebrations of 1918 copies. This version has a burnished blade, a polymer handle and a black cordura sheath.

Intended use: Tactical / Military / Collection

Type of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Blade treatment: Burnishing MIL-C-13924
Handle: Polymers
Blade length: 167mm.
Blade thickness: 6.3mm.
Total length: 270mm.
Weight: 224g.
Sheath: Nylon leg strap
Packaging: cardboard box with Extrema Ratio logos
Notes: Edition limited edition in 1918 copies - Edition to celebrate the hundred years of the Arditi of Italy

Target: Tactical / Military

Blade: Stainless Steel N690Co 58HRC
Handle: Kraton
Blade Length: 340mm.
Blade thickness: 6.3mm.
Blade Finishing: MIL-C-13924 Brushing
Total length: 493mm.
Balancing: advanced
Weight: 650g.
Sheath: Tactical, Nylon, Thigh

Target: Tactical / Military / Collection

Type of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Blade Treatment: Satin
Handle: Forprene
Blade length: 206mm.
Blade thickness: 6.3mm.
Total length: 345mm.
Weight: 500g.
Sheath: Nylon
Packing: Cardboard box with Extrema Ratio logos
Notes: Modern Reflection of the Gerber B.M.F. Built between the 80's and 90's

Target: Tactical / Military / Collection

Type of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Blade Treatment: Brush MIL-C-13924
Handle: Forprene
Blade length: 206mm.
Blade thickness: 6.3mm.
Total length: 345mm.
Weight: 500g.
Sheath: Nylon
Packing: Cardboard box with Extrema Ratio logos
Notes: Modern Reflection of the Gerber B.M.F. Built between the 80's and 90's

NK3 is a small knife that extends the family of the neck knives Extrema Ratio.

It differs from the models NK1 and NK2 for the largest size of the blade-type "long" 70mm. The ergonomic grip is designed so as to prevent accidental cuts during withdrawal from the scabbard.

On the back it is formed a drain for the positioning of the thumb or index depending on use. The structure enables both use for work or cutting very effective for small precision work.

The Kydex sheath is a quick release and is supplied to the port of paracord knife in his neck.

intended use: Neck Knife
type of production: Industrial
production country: Italy
Blade: stainless steel N690Co 58 / 60HRC
Blade treatment: Desert Warfare
manicatura: stainless steel N690Co 58 / 60HRC
blade length: 70mm.
blade thickness: 6.3mm.
total length: 172mm.
Weight: 95g.
Sheath: Kydex, neck
Package: Cardboard box with logos Extrema Ratio
Notes: possibility of using the sheath with MOLLE systems or Tek-Lok (not included in the package)

NK3 is a small knife that extends the family of the neck knives Extrema Ratio.

It differs from the models NK1 and NK2 for the largest size of the blade-type "long" 70mm. The ergonomic grip is designed so as to prevent accidental cuts during withdrawal from the scabbard.

On the back it is formed a drain for the positioning of the thumb or index depending on use. The structure enables both use for work or cutting very effective for small precision work.

The Kydex sheath is a quick release and is supplied to the port of paracord knife in his neck.

intended use: Neck Knife
type of production: Industrial
production country: Italy
Blade: stainless steel N690Co 58 / 60HRC
Blade treatment: Black PVD cat. MIL-C-13924
manicatura: stainless steel N690Co 58 / 60HRC
blade length: 70mm.
blade thickness: 6.3mm.
total length: 172mm.
Weight: 95g.
Sheath: Kydex, neck
Package: Cardboard box with logos Extrema Ratio
Notes: possibility of using the sheath with MOLLE systems or Tek-Lok (not included in the package)

Intended use: Tactical

Type of production: Industrial
Production Country: Italy
Blade: N690Co 58HRC stainless steel
Blade treatment: burnishing MIL-C-13924
Handle: Forprene
Blade length: 110mm.
Blade thickness: 6.3mm.
Overall length: 240mm.
Weight: 241g.
Sheath: ABS, with Tek-Lok type of coupling system
Packaging: cardboard box with Extrema Ratio logos
Notes: long-handled version of the model Shrapnel OG

NK3 is a small knife that extends the family of the neck knives Extrema Ratio.

It differs from the models NK1 and NK2 for the largest size of the blade-type "long" 70mm. The ergonomic grip is designed so as to prevent accidental cuts during withdrawal from the scabbard.

On the back it is formed a drain for the positioning of the thumb or index depending on use. The structure enables both use for work or cutting very effective for small precision work.

The Kydex sheath is a quick release and is supplied to the port of paracord knife in his neck.

intended use: Neck Knife
type of production: Industrial
production country: Italy
Blade: stainless steel N690Co 58 / 60HRC
Blade treatment: Black PVD cat. MIL-C-13924
manicatura: stainless steel N690Co 58 / 60HRC
blade length: 70mm.
blade thickness: 6.3mm.
total length: 153mm.
Weight: 82g.
Sheath: Kydex, neck
Package: Cardboard box with logos Extrema Ratio
Notes: possibility of using the sheath with MOLLE systems or Tek-Lok (not included in the package)

NK3 is a small knife that extends the family of the neck knives Extrema Ratio.

It differs from the models NK1 and NK2 for the largest size of the blade-type "long" 70mm. The ergonomic grip is designed so as to prevent accidental cuts during withdrawal from the scabbard.

On the back it is formed a drain for the positioning of the thumb or index depending on use. The structure enables both use for work or cutting very effective for small precision work.

The Kydex sheath is a quick release and is supplied to the port of paracord knife in his neck.

intended use: Neck Knife
type of production: Industrial
production country: Italy
Blade: stainless steel N690Co 58 / 60HRC
Blade treatment: Black PVD cat. MIL-C-13924
manicatura: stainless steel N690Co 58 / 60HRC
blade length: 70mm.
blade thickness: 6.3mm.
total length: 153mm.
Weight: 82g.
Sheath: Kydex, neck
Package: Cardboard box with logos Extrema Ratio
Notes: possibility of using the sheath with MOLLE systems or Tek-Lok (not included in the package)

NK3 is a small knife that extends the family of the neck knives Extrema Ratio.

It differs from the models NK1 and NK2 for the largest size of the blade-type "long" 70mm. The ergonomic grip is designed so as to prevent accidental cuts during withdrawal from the scabbard.

On the back it is formed a drain for the positioning of the thumb or index depending on use. The structure enables both use for work or cutting very effective for small precision work.

The Kydex sheath is a quick release and is supplied to the port of paracord knife in his neck.

intended use: Neck Knife
type of production: Industrial
production country: Italy
Blade: stainless steel N690Co 58 / 60HRC
Blade treatment: Stone Washed
manicatura: stainless steel N690Co 58 / 60HRC
blade length: 70mm.
blade thickness: 6.3mm.
total length: 153mm.
Weight: 82g.
Sheath: Kydex, neck
Package: Cardboard box with logos Extrema Ratio
Notes: possibility of using the sheath with MOLLE systems or Tek-Lok (not included in the package)

NK2 is a small knife that extends the family of the Extrema Ratio neck knives.

It differs from the model NK1 for blade tip tanto styled and for the increased thickness. The ergonomic grip is designed so as to prevent accidental cuts during withdrawal from the scabbard.

On the back it is formed a drain for the positioning of the thumb or forefinger depending on use. The structure enables both use for very effective cutting work or for small precision work.The quick release Kydex sheath is supplied with paracord for carrying on the neck.

Intended use: Neck Knife
Type of production: Industrial
Production country: Italy
Blade: stainless steel N690Co 58 / 60HRC
Blade treatment: Black PVD cat. MIL-C-13924
Handle: stainless steel N690Co 58 / 60HRC
Blade length: 50mm.
Blade thickness: 6.3mm.
Total length: 129mm.
Weight: 69g.
Sheath: Kydex, neck
Package: Cardboard box with Extrema Ratio logo
Notes: possibility of using the sheath with MOLLE systems or Tek-Lok (not included in the package)

NK2 is a small knife that extends the family of the neck knives Extrema Ratio.

It differs from the model NK1 for blade-type "time" and for the increased thickness. The ergonomic grip is designed so as to prevent accidental cuts during withdrawal from the scabbard.

On the back it is formed a drain for the positioning of the thumb or index depending on use. The structure enables both use for work or cutting very effective for small precision work.The Kydex sheath is a quick release and is supplied to the port of paracord knife in his neck.

intended use: Neck Knife
type of production: Industrial
production country: Italy
Blade: stainless steel N690Co 58 / 60HRC
Blade treatment: Stone Washed
manicatura: stainless steel N690Co 58 / 60HRC
blade length: 50mm.
blade thickness: 6.3mm.
total length: 129mm.
Weight: 69g.
Sheath: Kydex, neck
Package: Cardboard box with logos Extrema Ratio
Notes: possibility of using the sheath with MOLLE systems or Tek-Lok (not included in the package)

The A.S.F.K. is the knife adopted by the Army Special Forces Command (COM.FO.SE), designed to meet the operational needs of elite units. It draws inspiration from combat knives historically used in military contexts, reinterpreted in a modern key to offer maximum efficiency and reliability.

A contemporary interpretation of the classic trench knife, the A.S.F.K. combines a bold design with advanced technical solutions. The blade is made of Böhler N690 steel, hardened to ensure an excellent balance between hardness, corrosion resistance, and edge retention, even under conditions of intense use.

The ergonomic, non-slip Forprene handle ensures a firm and secure grip in any situation. The ring guard effectively protects the hand and incorporates a glass-breaking function, making the knife a versatile tool even in operational and emergency situations.

A.S.F.K. comes with a desert-colored Cordura sheath equipped with a M.O.L.L.E. attachment system, compatible with modern tactical gear, to ensure practicality of transport and quick access.

Robust, functional, and designed down to the smallest detail, the A.S.F.K. represents a reliable solution for professional use and enthusiasts in the field.

Intended use: Tactical/Collector’s

Production type: Industrial
Country of manufacture: Italy
Blade: Full tang, N690Co stainless steel, 58 HRC
Blade finish: MIL-C-13924 burnishing
Handle: Forprene
Blade length: 162mm.
Blade thickness: 6.3mm.
Overall length: 289mm.
Balance: rear-weighted
Weight: 413g.
Sheath: Cordura, desert color, M.O.L.L.E. compatible
Packaging: cardboard box with Extrema Ratio logos
Notes: issued to the Italian Army Special Forces Command (COM.FO.SE.)

DOBERMANN IV Africa is a knife dedicated to professionals of the hunt.

The knife blade is stainless Böhler N690, the tested steel Austrian enriched with chromium, vanadium, molybdenum and cobalt whose characteristics are hardness, essential to achieve effective sharpening, and maintaining high characteristics of elasticity.

DOBERMANN Africa IV will be provided with two handles, a wooden santos rosewood and into Forprene. The user can change the handle with ease depending on the needs of the moment. The knife will also be provided with a leather sheath Italian manufacture, of a plate sharpener and a scioglinodi steel.

Intended Use: Hunting / Hiking / Collection

Type of production: Industrial
Production Lama: Italy
Blade: stainless steel N690Co
Blade treatment: Satin
Handle: Wood Santos and / or Forprene
Blade length: 185mm.
Blade thickness: 6.3mm.
Overall length: 315mm.
Weight: 368g.
Sheath: Brown leather, hand-stitched, made in Italy
Packaging: Cardboard box with logos Extrema Ratio
Note: The package includes a diamond sharpener and one untie knots in stainless steel

Fox - Modras G10 Black Dagger - Single Wire - FX-507 - knife

Intended use: Tactical / Military / Collectibles

Type of production: Industrial
Production Blade: Italy
Blade: Stainless steel N690Co
Treatment Blade: PVD
Handle: G-10
Blade length: 160mm.
Blade thickness: 6.3mm.
Length closed: -
Overall length: 330mm.
Thick when closed: -
Balance: Set back
Weight: 342g.
Closure: -
Clip: -
Sheath: leather, with attacks M.O.L.L.E.
Packaging: Cardboard box with logos FKMD
Notes: single-wire version

The Selvans is born from the collaboration between Extrema Ratio and FISSS (Italian Federation of Sports and Experimental Survival). The project consists of modifying Ontos, a military survival knife, to accentuate and maximize the knife's performance as a hiking tool.

The handle has been lengthened and the blade weighed down to facilitate the effectiveness of the cutting strokes and to make more use of the inertia of the blow.

Intended use: Heavy Utility
Type of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Surface treatment: Brun-MIL-C-13924
Handle: Forprene
Blade length: 15.5mm.
Blade thickness: 6.3mm.
Total length: 310mm.
Balancing: advanced
Weight: 424g.
Sheath: nylon, MOLLE compatible
Packaging: Cardboard box with Extrema Ratio logos
Note: developed in collaboration with FISSS (Italian Federation of Sports and Experimental Survival)

Intended use: military / tactical

Type of production: industrial
Production Blade: Italy
Blade: Stainless steel 58HRC N690Co
Treatment Blade: Testudo MIL-C-13924
Handle: 4.5mm anti-corrosion
Blade length: 115mm.
Blade Thickness: 6.3mm.
Length closed: 142
Overall length: 262mm.
Balancing: -
Weight: 330g.
Closure: front lock changed - safety pin threaded
Clip: -
Sheath: tactical nylon with attacks M.O.L.L.E. suitable for both the knife closed and open
Notes: diamond sharpener included

Dobermann IV rappresenta l'evoluzione del primo e piu' classico modello Extrema Ratio: il Doberman.

Questo modello è caratterizzato da un uso estremamente flessibile, dalla caccia alla sopravvivenza, per questo il Dobermann IV e' stato sviluppato in due configurazioni, una tattica, l'altra sportiva.

Dal 97, il dobermann ha subito notevoli mutamenti estetici e progettuali basati sull'evoluzione del gusto e delle tendenze, pur mantenendo una linea coerente ai disegni originali. Dobermann IV fa della flessibilità d'uso e della resistenza strutturale la sua caratteristica principale.

Destinazione d'uso: Tattico / Collezione

Tipo di produzione: Industriale
Produzione Lama: Italia
Lama: in acciaio inox N690Co
Trattamento Lama: Testudo
Manicatura: Forprene
Lunghezza lama: 185mm.
Spessore lama: 6.3mm.
Lunghezza totale: 315mm.
Peso: 360g.
Fodero: in Nylon e materiale plastico
Confezione: Scatola di cartone con loghi Extrema Ratio
Note: -

Extrema Ratio Shrapnel Desert Warfare

Il primo coltello Extrema Ratio che, pur avendo una lunghezza totale di soli 21 centimetri, mantiene inalterate tutte le caratteristiche tecnico/tattiche dei precedenti modelli.

Destinazione d'uso: Tattico/Sportivo

Tipo di produzione: Industriale
Paese di produzione: Italia
Lama: in acciaio inox N690Co
Finitura: brunitura Testudo
Impugnatura: Forprene
Lunghezza lama: 110mm.
Spessore lama: 6.3mm.
Lunghezza totale: 210mm.
Bilanciatura: arretrata
Peso: 200g.
Fodero: in ABS con aggancio Tek-Lok con sistema automatico di ritenzione del coltello.
Confezione: Scatola di cartone con loghi Extrema Ratio e certificati del produttore

The Fulcrum C Black is the compact version of the famous Fulcrum knife, designed by Extrema Ratio to offer maximum reliability in a smaller, easily transportable format. Designed for tactical and emergency use, this fixed-blade knife stands out for its strength, ergonomics and versatility.

The blade measures 110 mm and features a tanto profile, with flat sharpening and 40 mm partial teeth, ideal for effectively cutting tough materials such as ropes and fabrics. Made of Böhler N690 steel hardened to 58 HRC, it is protected by a black burnished MIL-C-13924 finish, which provides corrosion resistance and reduces glare.

The handle is made of Forprene, a material resistant to weathering, impact and mechanical stress, offering a secure grip even in extreme conditions. The ergonomic and compact handle makes the Fulcrum C particularly suitable for use in confined spaces or as a backup tool.

The knife features a rigid ABS sheath, which can be mounted vertically, horizontally, or at a 45-degree angle, offering great flexibility in carrying and quick draw.

Main specifications:
Blade length: 110 mm
Total length: 214 mm
Blade thickness: 6.3 mm
Blade material: Böhler N690 steel (58 HRC)
Blade finish: burnishing MIL-C-13924
Sharpening: flat edge with partial serration (40 mm)
Handle material: Forprene
Weight: 226 g
Sheath: rigid ABS, with multiple carry options
Manufacturing: Made in Italy

After the Shrapnel, Extrema Ratio gives us a second knife that, despite having a total length of only 21 centimeters, maintains all the technical / tactical characteristics of the previous models.

The Fulcrum C (compact) therefore completes the Fulcrum series with a fixed blade. Sturdy and compact knife, suitable for emergency or concealed use.

Intended use: Tactical / Sports

Type of production: Industrial
Country of production: Italy
Blade: N690Co stainless steel
Finish: camouflage coating
Handle: Forprene
Blade length: 110mm.
Blade thickness: 6.3mm.
Total length: 210mm.
Balancing: set back
Weight: 200g.
Sheath: rigid in ABS with Tek-Lok coupling with automatic knife retention system.
Packaging: Cardboard box with Extrema Ratio logos and manufacturer's certificates

Intended Use: Tactical

Type of production: Industrial
Production Blade: Italy
Blade: Stainless steel N690Co
Treatment Lama Desert Warfare
Handle: Forprene
Blade length: 110mm.
Blade thickness: 6.3mm.
Length closed: -
Total length: 212mm.
Thick when closed: -
Balance: -
Weight: 209g.
Closing: -
Clip: -
Sheath: ABS
Packaging: Cardboard box with logos Extrema Ratio
Notes:

Intended use: tactical / military / multirole
Blade: full tang stainless steel N690Co 58HRC Desert Warfare
Handle: Removable in Forprene
Blade length: 180mm.
Blade Thickness: 6.3mm.
Closed Length: -
Overall length: 310mm.
Balancing: Advanced, 1.5 cm from the branch of the lower guard
Weight: 325g.
Closed: -
Clip: -
Sheath: modular tactical, from thigh or belt, Nylon and Kydex
Notes: -

Cutting knife designed for special tasks, specifically developed for the 9th Assault Paratrooper Regiment Col Moschin, an elite unit of the Folgore Brigade.

All knives in this series feature straight ergonomic KRATON handles designed to ensure a solid grip and facilitate a quick transition between Sabre Grip and Reverse Grip. A stainless steel Allen screw allows for field disassembly for maintenance and lubrication of the full tang, extending the knife's operational lifespan.

The sheath is suitable for airborne, underwater, and amphibious operations, and can be attached to belts or tactical gear.

Intended Use: Collection/Tactical/Military
Country of Manufacture: Italy
Blade: N690Co stainless steel, 58HRC
Blade Finish: MIL-C-13924 Black Coating
Handle: Removable, made of Kraton
Blade Length: 160mm
Blade Thickness: 6.3mm
Total Length: 290mm
Balance: Rearward, 1 cm behind the lower guard
Weight: 265g
Sheath: Modular tactical thigh or belt sheath, made of Nylon
Packaging: Cardboard box with Extrema Ratio logos
Notes: Developed and used by the 9th Assault Paratrooper Regiment Col Moschin of the Folgore Brigade of the Italian Army

MK2.1 is a reinterpretation of a classic: a tribute to a veteran, the restyling of one of the most widespread and widely used combat knives during World War II, the Mark 2. Extrema Ratio has undertaken this ambitious project with the aim of preserving the distinctive features of the original, making only functional changes aimed at improving performance.

The blade is made of cobalt stainless steel, while the other components are made of AISI 303 and AISI 304; in the handle, glass fiber-reinforced nylon replaces the traditional leather washers. The ergonomics of the original have been maintained, but all structural parts have been oversized to obtain a massive, sturdy, and truly multi-purpose knife.

Conceptually, the most significant changes are aimed at resolving the “weak points” of the historical model: the possibility of field disassembly without tools, a modified straight Bowie tip - easier to resharpen - and grooves on the “barrel” handle, which allow the orientation of the blade to be felt even in the dark and significantly increase grip during twisting movements (screwdriver effect). Further improvements include holes for the safety lanyard and those on the guard.

The traditional blood groove has been replaced by the characteristic Extrema Ratio side groove, chosen for aesthetic and weight reduction reasons. The knife comes with a standard sheath with automatic attachment, safety flap, and thigh strap for attachment to the hip.

Intended use: tactical/military/multi-purpose

Type of production: industrial
Country of production: Italy
Blade: N690Co stainless steel
Blade finish: MIL-C-13924 burnishing
Handle: Nylon
Blade length: 177mm.
Blade thickness: 6.3 mm.
Total length: 303 mm.
Weight: 393 g.
Sheath: modular tactical, for thigh or belt, made of nylon and polymers
Packaging: cardboard box with Extrema Ratio logos
Notes: -

Cutting knife for special uses, developed specifically for the 9th Parachute Assault Regiment Col Moschin, elite units of the brigade Thunderbolt.

All knives in this series have straight handles in KRATON from ergonomic design whose shape and size as well as a firm grip promotes the rapid change of grip from the starboard (Sabre Grip) to reverse (Reverse Grip). An allen screw in stainless steel allows the dismantling of the campaign for the maintenance and lubrication of the shank through increasing the operating life of the knife.

The sheath and 'suitable all'aviolancio and underwater and amphibian operations and' applicable to the belt or accoutrements.

Intended use: Collection / Tactical / Military

Blade: Stainless steel 58HRC N690Co GeoCamo
Handle: Kraton removable
Blade length: 160mm.
Blade Thickness: 6.3mm.
Length closed:-mm.
Total length: 290mm.
Balance: back, 1 cm. the branch of lower guard
Weight: 265g.
Closing: -
Clip: -
Sheath: tactical adjustable, from thigh or belt, Nylon
Notes: -