Knife - Essential Tool for Camping, Outdoor Adventure and collection

RETIRED KNIFE FROM PRIVATE COLLECTION
* Provenance: Withdrawn from a private individual, previously purchased
* Condition: Iconic knife from the early 2000s, never used, in very good condition (typical signs of wear of this model and material given by rubbing with the sheath)
* Available on the market: Difficult to find and not in this configuration
* Sharpening: Professionally sharpened
* Blade marks: Typical wear marks of this model and material, given by rubbing with the sheath
* Signs on handle: None
* Box: -
* Sheath: Present and in excellent condition, Made in USA by SpecOps
* Manuals, Certificates and Guarantees: -
* Controlled and Certified by our in-house laboratory

Intended use: Multi-role

Type of Production: industrial
Blade: Full Tang in Titanium Beta, with micro-balled finish
Country of production USA
Grip: Black G10
Blade length: 130mm.
Blade thickness: 6.3mm.
Total length: 255mm.
Weight: 243g.
Sheath: Made in USA by SpecOps, in coyote colored Nylon, belt, MOLLE compatible, with thermoformed Kydex inner part
Packaging: -
Note: Previously purchased knife, from private collection - iconic product from the early 2000s

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Withdrawn from a private collection, previously purchased
* Condition: Like new, never used and never removed from its original packaging
* Available on the market: Out of production
* Sharpness: Factory sharp
* Marks on blade: None
* Marks on handle: None
* Box: Present
* Sheath: Present
* Manuals, Certificates, and Warranties: Present
* Checked and Certified by our in-house laboratory

Intended use: Tactical/Sport

Type of production: Industrial
Country of production: Italy
Blade: N690Co stainless steel
Finish: Testudo burnishing
Handle: Forprene
Blade length: 128mm.
Blade thickness: 6.3mm.
Total length: 258mm.
Balance: rearward
Weight: 253g.
Sheath: Gen.1, ABS, with Tek-Lok multi-position attachment
Packaging: cardboard box with Extrema Ratio logos
Notes: from a private collection - 2007 model now out of production (replaced by the T4000 series)

NEW STRUCTURE: Full Tang
NEW GEOMETRY: Greater Control
NEW HANDLES: Black G10

The Harpoon F EVO, limited to only 150 numbered pieces, is the functional evolution of a tried and tested design. It retains the identity of the original Harpoon, but refines its ergonomics, structure, and balance for real and continuous use.

The full tang construction, G10 scales, and updated geometry offer greater control and solidity, while the 6.3 mm Böhler N690 blade guarantees reliability, penetration, and cutting precision.

The EVO finish completes a knife designed for operational use, advanced survival, and knowledgeable collectors.

Intended use: Tactical / Collectible

Type of production: Industrial
Country of production: Italy
Blade: full tang in N690Co steel
Blade treatment: Anti-reflective burnishing with EVO finish
Handle: Black G10 with CNC machining
Blade length: 209 mm.
Blade thickness: 6.3 mm.
Total length: 340 mm.
Weight: 442 g.
Sheath: Thigh sheath, reinforced Cordura
Packaging: Cardboard box with Extrema Ratio logos and Limited Edition plaque with progressive knife numbering
Notes: Limited edition, numbered to only 150 pieces worldwide

Italian handmade knife designed for versatile, everyday use.

The full tang blade in D2 steel with Stone Edge finish guarantees reliability and character, while the G10 handle offers a secure grip in all conditions.

Sturdy, well-balanced, and compact, it comes with a M.O.L.L.E.-compatible Kydex sheath and certificate of authenticity. A unique piece, handmade with care and attention to detail.

Use: Light Utility / All Round

Type of production: Handcrafted
Country of production: Italy
Blade: full tang, D2 steel at 59/61HRC
Blade finish: Raw
Handle: G10
Blade length: 100mm.
Blade thickness: 5.5mm.
Total length: 203mm.
Balance: rearward
Weight: 225g.
Sheath: Kydex, thermoformed, with M.O.L.L.E. compatible belt attachment.
Packaging: accompanied by warranty and authenticity certificate.
Notes: handmade knife.

RAO STEEL is the outdoor knife to take everywhere: trekking, survival, camping, or simply in your backpack. 5 mm fixed blade, customizable grip, technical sheath.

Designed for those who don't seek fortune but rely on their equipment. Always reliable, everywhere. No compromises.

Derived from the legendary folding RAO, RAO STEEL distills its tactical essence into an even more compact and practical fixed blade version. A knife designed for action, designed to tackle nature and every need in the field. RAO STEEL cuts, carves, and splits.

From wood for lighting a fire to building a shelter, to the most precise tasks when camping or on daily excursions.

RAO STEEL NITROGEN SATIN
For those who love clean and essential functionality: high corrosion-resistant Nitrogen steel, easy to resharpen even with makeshift tools. Satin finish: perfect for outdoor contexts, even in food preparation. Ideal in humid, variable environments and on long journeys.

Intended use: Outdoor / Utility

Type of production: industrial
Country of production: Italy
Blade: full tang, Nitrogen steel
Blade finish: Satin
Handle: monolithic, perforated, Nitrogen steel
Blade length: 87mm.
Blade thickness: 5 mm.
Total length: 190 mm.
Weight: 128 g.
Sheath: Kydex, ambidextrous, with double button loop attachment
Packaging: Cardboard box with Extrema Ratio logos
Notes: -

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Withdrawn from a private collection, previously purchased and used
* Condition: Overall in good condition, with superficial cosmetic marks on the blade due to actual use, which in no way compromise its functionality and use
* Available on the market: On the market
* Sharpening: Resharpened
* Marks on blade: Several superficial cosmetic marks on the burnishing
* Marks on handle: None
* Box: Present and complete
* Sheath: Present and in excellent condition
* Manuals, certificates, and warranties: Present
* Checked and certified by our in-house laboratory

Born from the growing demand of demanding professionals, Extrema Ratio presents ONTOS—a field knife designed to tackle any challenge. The name, derived from the Greek word for “the thing,” represents the perfect synthesis of strength, versatility, and reliability. Compact but extremely durable, ONTOS is the ideal companion in any situation, thanks to its partially serrated blade that always guarantees a sharp, ready-to-use cut.

Its nylon thigh sheath, equipped with the MOLLE system, is designed to remain firmly anchored even in the most difficult conditions, when the soldier is forced to give up his primary tactical equipment. And for those looking for an extra level of preparedness, a survival kit is available, sold separately, to be attached directly to the knife sheath.

Intended use: Heavy Utility

Type of production: Industrial
Country of production: Italy
Blade: N690Co 58HRC stainless steel
Surface treatment: MIL-C-13924 burnishing
Handle: Forprene
Blade length: 168mm.
Blade thickness: 6.3mm.
Total length: 299 mm.
Balance: advanced
Weight: 411 g.
Sheath: nylon thigh sheath, modular, compatible with M.O.L.L.E. systems.
Packaging: Cardboard box with Extrema Ratio logos
Notes: knife previously purchased and used, from a private collection

MCUSTA MC-0241GD Tanto SPG2/R2 Damascus - Fixed Japanese Knife

The MCUSTA MC-0241GD is a high-end fixed knife inspired by traditional Seki swords, crafted with Japanese craftsmanship. This exclusive model combines classic aesthetics with modern materials, offering a perfect balance between beauty and functionality. The SPG2/R-2 laminated damascus steel blade provides exceptional cutting performance, while the Japanese-style tsuka-gawa breed and woven leather handle ensures a secure and comfortable grip. Packaged in an elegant paulownia wood box, it is ideal for collectors and enthusiasts of high-quality knives.

Intended Use: Collector/Sportsman

Type of manufacture: industrial
Blade: full tang in rolled damascus steel, with a 61/62HRC SPG2 core and R-2 outer cheeks
Blade finish: hammering (Tsuchime)
Country of manufacture: Japan
Handle: genuine Breed leather handle (Samekawa) with leather weave (Tsuka-Gawa)
Blade length: 135mm.
Blade thickness: 4.2mm.
Total length: 265mm.
Balance: on the guard branch
Weight: 195g.
Sheath: leather, belt, for vertical carry
Packaging: box made of Paulownia wood, with manufacturer's logos
Notes: -

Designed to offer the ultimate in maneuverability and speed of action, the new Wander Tactical - Uro Tanto Custom Edition stands out for its 5mm-thick blade, designed to be lighter and more balanced without compromising strength. This design choice makes it particularly responsive and quick to use, ideal for those looking for a reliable tool that is also dynamic in operational situations.

Handcrafted in Italy, this high-quality knife combines functionality and attention to detail in a design designed for the most demanding enthusiasts.

Type of production: Handcrafted

Country of production: Italy
Blade: D2 steel at 59/61HRC
Blade finish: Indigenous
Handle: Micarta 
Blade length: 155mm.
Blade thickness: 5mm.
Total length: 299mm.
Balance: advanced
Weight: 367g.
Sheath: made of Kydex, thermoformed, with M.O.L.L.E. compatible belt loop attachment.
Packaging: offered by the manufacturer without packaging, accompanied by certificate of authenticity
Notes: Each knife is unique and handcrafted

WITHDRAWN FROM A PRIVATE COLLECTION

• Type: Previously Purchased
• Condition: In excellent condition
• Market Availability: First version with leather sheath
• Factory Sharpened: Yes
• Blade Marks: None
• Handle Marks: None
• Packaging: Complete, cardboard box with manufacturer logos
• Sheath: Leather
• Manuals, Certificates, and Warranties: Warranty certificates
• Checked and Certified: By our internal laboratory

Intended Use: Roasting

• Production Type: Industrial
• Blade Production: Italy
• Blade: N690Co stainless steel, hardened to 58HRC
• Blade Treatment: Satin finish
• Handle: Forprene
• Blade Length: 300mm
• Blade Thickness: 6.5mm at the handle, 4mm on the blade
• Total Length: 433mm
• Weight: 336g
• Sheath: Black leather
• Packaging: Cardboard box with Extrema Ratio logos
• Note: Also suitable as a sports or collectible knife

Extrema Ratio has applied its rigorous military standards to a series of professional kitchen knives.

The blade is made of tested BOHLER N690 steel, enriched with chromium, vanadium, molybdenum, and cobalt, hardened to 58HRC. The handle is made of Forprene, an elastomer that meets NATO standards for resistance to extreme conditions and is fully removable from the blade, allowing for thorough cleaning and maintenance.

Each knife comes with its own sheath, also derived from military equipment. While not designed to meet hygiene regulations, it ensures safe transport of the extremely sharp blade and protects it from impacts that could reduce its efficiency. We recommend using the sheath only for transportation and long-term storage.

Born out of the growing demand of demanding professionals, Extrema Ratio presents ONTOS - a field knife designed to meet any challenge. The name, derived from the Greek “the thing,” represents the perfect synthesis of toughness, versatility and reliability. Compact yet extremely durable, ONTOS is the ideal companion in any situation, thanks to its partially serrated blade that always ensures a sharp, ready-to-use cut.

Its nylon thigh scabbard, equipped with the MOLLE system, is designed to stay firmly anchored even in the harshest conditions, when the soldier is forced to give up his primary tactical equipment. And for those seeking an extra level of preparedness, a survival kit, purchased separately, is available to attach directly to the knife sheath.

Intended Use: Heavy Utility
Production Type: Industrial
Country of manufacture: Italy
Blade: N690Co 58HRC stainless steel
Surface treatment: Burnishing MIL-C-13924
Handle: Forprene
Blade length: 168mm.
Blade thickness: 6.3mm.
Total length: 299mm.
Balance: advanced
Weight: 411g.
Sheath: nylon, MOLLE compatible
Packaging: cardboard box with Extrema Ratio logos
Notes: -

KNIFE WITHDRAWN FROM A PRIVATE COLLECTION
* Origin: Withdrawn from a private individual, previously purchased
* Condition: USED
* Commercially available: available
* Sharpening: resharpened by our internal laboratory
* Signs on the blade: has superficial scratches on the entire blade on both sides of the blade (visible in the photos) which do not compromise the quality but only the aesthetics
* Signs on the handle: None
* Box: YES
* Sheath: Yes
* Manuals, Certificates and Guarantees: Yes
* Checked and Certified by our internal laboratory

The Giant Mamba has a tanto blade in Böhler N690 steel, 6.3 mm thick with a hardness of 58 HRC, flat edge and full-length lightening fuller.

The Forprene handle with threaded tang lock makes the knife solid and well-balanced. The sheath, M.O.L.L.E. compatible, is made of shock-absorbing nylon with a conical guide for quick insertion and extraction and a system that prevents shaking noises, it is equipped with a two-button safety flap, a thigh with anti-rotation rubber reinforcement and an ambidextrous reversible safety: simply pressing the trigger unlocks the blade.

Intended use: Tactical / Multi-role

Type of production: Industrial
Country of production: Italy
Blade: N690Co 58HRC stainless steel
Blade treatment: Mil-C-13924 burnishing
Handle: Forprene
Blade length: 163mm.
Blade thickness: 6.3mm.
Total length: 293mm.
Weight: 289g.
Sheath: Nylon
Packaging: Cardboard box with Extrema Ratio logos
Notes: -

KNIFE RETIRED FROM PRIVATE COLLECTION
* Type: Previously purchased
* Condition: Overall in very good condition
* Commercially available
* Sharpness: Factory, never resharpened
* Marks on blade: none
* Marks on handle: None
* Box: NOT present
* Sheath: /
* Manuals, Certificates and Warranties: /
* Checked and Certified by our internal laboratory

Intended use: Combat / All Round Utility

Blade: N690Co 59/60HRC stainless steel
Treatment: Coyote Tan Idroglider
Handle: Kraton
Blade length: 185mm.
Blade thickness: 5mm.
Closed length: -
Total length: 315mm.
Balancing: On the guard branch
Weight: 285g.
Closure: -
Clips: -
Sheath: Modular in fiberglass, Nylon and Cordura with stainless steel cable cutter
Note: -

A well-motivated classic. The "kukri," the Nepalese multi-purpose tool made famous by Rgt. Gurka, in the service of His Britannic Majesty and derived from ancient Greek falcate swords.

The blade of this machete has differentiated roundings. Near the handle the blade is razor rounded so that a narrow sharpening angle can be achieved without unduly affecting the thickness of the back material, which must remain solid. The rounding at the end of the blade, on the other hand, is flat and well angled so as to effortlessly penetrate wood and vegetation.

Usually these kinds of tools are made of soft steel to be more elastic and more easily resharpened. Extrema Ratio has succeeded in obtaining an elastic tool with a decidedly long-lived and durable sharpening by using instead a hard steel such as BÖHLER N690. This machete comes with a thigh scabbard with black Cordura storage pocket and safety carry strap.

Intended Use: Tactical/Military

Blade: N690Co 58HRC stainless steel
Handle: Kraton
Blade length: 340mm.
Blade thickness: 6.3mm.
Blade finish: satin finish
Total length: 493mm.
Balance: advanced
Weight: 650g.
Sheath: Tactical, Nylon, thigh-high

Microtech Socom knives are named after the US Special Operations Command, abbreviated to Socom; an operational command under the US Department of Defence Special Operations Command. Under its jurisdiction are some very famous units, such as the Navy SEALs, Air Force PJs, Army Rangers and others. A knife that borrows such a name must mean business, and the Microtech Socom series does just that! Thanks to high-quality materials that can withstand the rigours of the battlefield. Knives built to last.

The Microtech Signature Series is designed for customers looking for a more exclusive option than the already excellent standard models. Depending on the model, they are distinguished by the use of first-class materials and finishes: e.g. carbon fibre, copper, Damascus and DLC.

Intended use: Tactical / Sporting

Production type: Midtech
Country of manufacture: USA
Blade: Stainless steel M390 60-61HRC
Blade Finish: Dark Dual Tone, Black Dark Washed and Black DLC
Handle: Carbon Fibre
Blade length: 95mm.
Blade thickness: 4mm.
Total length: 207mm.
Weight: 177g. (225g. scabbard included)
Sheath: Kydex Carbon Fibre, with steel clip
Packaging: cardboard box with Microtech USA logos
Notes: -

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Type: Early 2000s knife, previously purchased.
* Condition: Overall in good condition.
* Commercially available Discontinued
* Sharpening: Factory.
* Marks on blade: Small abrasions given by being placed in Kydex sheath.
* Marks on handle: None
* Box: -
* Scabbard: Present
* Manuals, Certificates and Warranties: - -
* Checked and Certified by our in-house laboratory

Intended Use: Tactical

Production type: MidTech
Country of Production: USA
Blade: full tang stainless steel CPM-S30V
Finish: Tiger Stripe
Handle: Paracord
Blade length: 100mm.
Blade thickness: 4.5mm.
Total length: 195mm.
Weight: 125g.
Sheath: thermoformed kydex, with Tek-Lok multi-position attachment
Notes: previously purchased knife, from private collection

Use: EDC / Light Utility / All Round

Type of Production: Handcrafted
Country of Production: Italy
Blade: Integral, D2 steel at 59/61HRC
Blade Treatment: -
Handle: Micarta
Blade Length: 100mm
Blade Thickness: 5mm
Total Length: 205mm
Balance: Rearward
Weight: 214g
Sheath: Thermoformed Kydex, with tek-lok attachment
Package: -
Notes: Each knife is unique and handcrafted; there may be slight differences in finishes, colors, and materials compared to the photographed product

The Wander Tactical Lynx knife is an excellent option for anyone looking for a robust and reliable knife. The blade is made of D2 steel, which offers good resistance to wear and corrosion. The length of the blade is approximately 10cm and has a clip point shape, making it ideal for many outdoor activities.

The handle of the knife is made of micarta, a resistant and non-slip material that offers excellent grip even in humid or sweaty conditions. The length of the handle is approximately 12cm which gives a good balance to the knife, making it easy to handle and control.

The Lynx knife comes with a Kydex sheath, which protects and keeps it safe during transport. In addition, the cover can be easily attached to a belt or trousers thanks to its quick fastening system.

Overall, the Wander Tactical Lynx knife is an excellent choice for anyone looking for a reliable and durable knife for outdoor activities. With its sturdy blade, non-slip handle and Kydex sheath, the Lynx knife is a very attractive option for hikers, campers and outdoor enthusiasts.

Intended use: utility / bushcraft

Type of Production: Artisanal
Country of Production: Italy
Blade: D2 steel at 59/60HRC
Blade Finish: Raw Finish
Handle: Micarta
Blade length: 105mm.
Blade thickness: 5mm.
Total length: 235mm.
Balance: backwards
Weight: 260g.
Sheath: kydex
Packaging: -
Notes: Each knife is unique and handcrafted

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Type: Previously Purchased - knife dating back to the late 80s
* Condition: excellent condition
* Commercially available: Discontinued since 2018
* Sharpening: Factory
* Marks on blade: No
* Signs on the handle: very small marks
* Box: packaging
* Sheath: in wood
* Manuals, Certificates and Warranties: -
* Checked and Certified by our internal laboratory

Intended use: Collection / Vintage

Type of production: handcrafted
Country of production: USA
Blade: hand forged Damascus steel
Blade treatment: -
Handle: in wood
Blade length: 110mm.
Blade thickness: 5.5mm.
Total length: 230mm.
Weight: 245g.
Scabbard: wooden scabbard
Notes: limited edition 1 of 200

Type of production: Artisan
Production Lama: Italy
Blade: in D2 steel at 59 / 60HRC
Blade treatment: Camo
Handle: Micarta
Blade length: 200mm.
Blade thickness: 5mm.
Total length: 347mm.
Balancing: backward
Weight: 510g.
Sheath: in Kydex, thermoformed, with tek-lok type attachment
Packaging: without packaging, supplied with its own certificate of authenticity
Notes: Dimorphodon with clip point tip and Rambo knife style blade - Limited Edition - Each knife is unique and handcrafted

Intended Use: utility / bushcraft

Type of Production: Artisan
Country of Production: Italy
Blade: D2 steel at 59/60HRC
Blade Finish: Raw Finish
Handle: Micarta
Blade Length: 105mm.
Blade thickness: 5mm.
Total length: 235mm.
Balance: backward
Weight: 260g.
Sheath: kydex
Package: -
Notes: Each knife is unique and handcrafted

THE BRAND
Exclusive collaboration between Coltelleria Collini and Extrema Ratio marketed under the brand KNIVES.IT. 

TECHNICAL DATA SHEET
Intended Use: Collection / Tactical / Neck knife
Production type: Industrial
Country of Production: Italy
Blade: Stainless steel N690Co 58/60HRC
Blade finish: Black PVD cat. MIL-C-13924
Handle: Stainless steel N690Co 58/60HRC
Blade length: 40mm.
Blade thickness: 5.5mm.
Total lenght: 166mm.
Weight: 86g.
Sheath: optional (available separately) in Kydex, handcrafted by the Italian Knife Maker Simone Tonolli.
Package: cardboard box with Extrema Ratio logos
Notes: knife created and manufactured by Extrema Ratio - each knife is numbered - Design by LoTactical

HISTORY
The Tengu takes its name from a mythical creature of Japanese folklore that is represented with both human and raven features, they had the reputation of being great warriors and legends say that some founders of martial arts were trained by them.

- It is designed to be used in many different grips, but is especially effective in the reverse grip.
- Designed to be carried in a variety of ways, whether as a neck knife, under shirt, clipped in a pocket or around the waist using optional systems such as Ulti-Clip or Tek-Lok or various M.O.L.L.E. type attachments.
- With its thickness of 5.5 mm. is extremely robust and thanks to the shape of the handle is comfortable even by those with large hands or those who want to use it with tactical gloves.
- The blade is compact, robust and very functional for both precision cutting and hard materials thanks to the serrated part on the back. The tanto-shaped tip is very robust and optimal for engraving work.

Intended Use: Sporty / Gentleman / EDC

Production type: Industrial
Country of Production: Maniago - Italy
Blade: Stainless steel M390 60/61HRC
Blade Treatment: Satin
Handle: Titanium
Blade length: 76mm.
Blade thickness: 2.5mm.
Length closed: 102mm.
Total lenght: 174mm.
Thickness when closed: 12mm.
Weight: 72g.
Opening: two hands
Washers: Brass
Closure: Slip Joint
Clip: -
Scabbard: leather, with belt loop with magnetic release
Package: Cardboard box with logos MKM Maniago Knife Makers
Notes: Design by Bruno Bruna Graciut, Master CIC (Italian Knife Makers Guild)

Intended Use: Sporting / Backup

Production type: Industrial
Country of Production: Italy
Blade: Bohler N690Co stainless steel at 58HRC
Blade Finish: Satin finish
Handle: Forprene
Blade length: 104mm.
Blade thickness: 4mm.
Total length: 208mm.
Weight: 196g.
Sheath: Nylon
Packaging: Cardboard box with Extrema Ratio logos.

After the success of the FULCRUM multirole knife, the civil bayonet version NFG (No Fixing Gears, without rifle attachment) was born. Like the FULCRUM, the bayonet is an extremely robust and versatile knife, the blade withstands breaking loads exceeding 150 kg, the tip is very robust and the profile allows you to work for a long time with the knife without affecting the sharpness of the last section . The advanced center of gravity and the weight of the blade make it suitable for heavy field work.

Intended use: tactical / military / multirole

Blade: N690Co 58HRC stainless steel
Handle: removable, in Forprene
Blade length: 180mm.
Blade thickness: 6.3mm.
Closed Length: -
Total length: 310mm.
Balance: advanced, 1.5 cm from the lower guard branch
Weight: 330g.
Closing: -
Clip: -
Sheath: modular tactical, from thigh or belt, in Nylon and Kydex, with blade attachment system for cutting with wire cutters
Notes: diamond sharpener integrated in the sheath - civil version, without rifle couplings

Japanese steel blends with Italian excellence

For this 2020 collaboration, exclusive of Collini Cutlery, we have decided to propose a series of best sellers produced by Extrema Ratio. Knives made with the famous San Mai steel produced by Japanese Takefu Steel. Specifically, we used V-Toku2 carbonaceous at 62 / 63HRC for the central plate and SUS410 stainless steel for the two external plates, in order to guarantee a very high cutting capacity, penetration and sealing of the wire together with an easy regrinding. and maintenance but at the same time the blade has a remarkable resistance to corrosion and an important increase in resilience given by the type of external steel and by the laminated structure.
Selvan model: for this First Production Run a run of 5 pieces numbered from 1 to 5 was created.

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

The handle has been lengthened and the blade weighted to favor the effectiveness of the cutting strokes and to make more use of the inertia of the stroke.

Intended use: Heavy Utility
Type of production: Industrial
Production Lama: Italy
Blade: integral, laminated Japanese steel (San Mai) with V-Toku2 (carbonaceous) cutting edge at 62 / 63HRC and SUS410 (stainless steel) external scales
Blade treatment: Testudo
Handle: Forprene
Blade length: 15.5mm.
Blade thickness: 6.3mm.
Total length: 310mm.
Thick when closed: -
Balancing: advanced
Weight: 424g.
Sheath: nylon, MOLLE compatible
Packaging: Cardboard box with Extrema Ratio logos
Notes: Numbered edition - cardboard box with Extremaratio logos and certificate - being the cutting edge in carbon steel it is advisable, in order to keep the blade in perfect condition, to protect the edge with a light surface of oil.

As in the ancient Japanese Samurai swords.

The rolled steel - imported into Italy by Collini Steel directly from the Japanese Takefu Steel - is based on the ancient Japanese tradition in the creation of the famous Samurai swords. In fact, as early as 1100 the expert Japanese blacksmiths combined different materials together to give the Katana swords incredible cutting capabilities combined with a resistance and flexibility previously unknown. It is thanks to this revolutionary construction technique that Samurai swords have been preserved to this day, becoming one of the most fascinating objects made by man. Following this tradition applied to modern metallurgy, today we are able to have technologically advanced steels already tested and used in cutlery also by famous brands such as Fallkniven, Cold Steel, Mcusta, Kai, Sog, Zwilling, Rockstead, etc.

Characteristics of San Mai steel: These are different types of metals bonded together to create a composite that encloses and intensifies the strengths of the metals individually taken:
- Longer tool life
thanks to the use of very high quality steels with high carbon content (VG10, CoS, Shiro) or sintered (SPG2), in the heart of the sheet (Core Steel), the blade, once hardened, achieves decidedly hardness and cutting performance higher than those achieved with the use of traditional steels.

- Greater resilience
built on the principle of Japanese swords, multilayer steel is difficult to break thanks to the toughness of the central steel (Core Steel) and the elasticity of the steel used for the side facing (Stainless Steel).

- Better corrosion resistance
the steel used for the external layers (Stainless Steel) guarantees the blade a high resistance to corrosion. The combination of the two or more materials used by Takefu Steel generates, on a galvanic level, a structure that improves corrosion resistance even on the wire.

- Easy processing even after heat treatment
although steel normally becomes harder after quenching, the lateral steel used in multilayer processing does not lose its softness and allows easy processing, drilling or welding even after heat treatment. For an optimal performance of the blade, cryogenic treatment is recommended.

- Improvement of the aesthetic result
The knives made with multi-state steel or with a damask pattern at the end of the processing are aesthetically elegant, refined and highly appreciated by collectors all over the world.

For more information: collinisteel

Intended use: Tactical / Military

Type of production: Industrial
Country of production: China
Blade: full tang in SK-5 carbon steel
Blade treatment: powder coated
Handle: G10
Blade length: 117mm.
Blade thickness: 4mm.
Total length: 238mm.
Weight: 130g.
Sheath: FRN with belt or neck loop
Packaging: cardboard box with CRKT logos
Notes: Design by Kit Carson

Type of production: Artisan
Lama production: Italy
Blade: in D2 steel at 59 / 60HRC
Blade treatment: Row Finish
Handle: Micarta
Blade length: 105mm.
Blade thickness: 5mm.
Total length: 235mm.
Balancing: backward
Weight: 260g.
Sheath: kydex
Packaging: -
Notes: Each knife is unique and handcrafted; there may be slight differences in finishes, colors and materials compared to the product photographed.

The Giant Mamba has a "tanto" blade in 6.3 mm thick Böhler N690 steel with a hardness of 58 HRC, flat edge and full length lightening.

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 conical opening for rapid insertion and extraction and a system that avoids shaking noises, it is equipped with a two-button safety flap, a thigh with anti-rotation rubber reinforcement and a reversible ambidextrous safety : simply pressing the trigger unlocks the blade.

 
Intended use: Tactical / Multirole

Type of production: Industrial
Country of production: Italy
Blade: in N690Co 58HRC stainless steel
Blade treatment: Satin
Handle: Forprene
Blade length: 163mm.
Blade thickness: 6.3mm.
Total length: 293mm.
Weight: 289g.
Sheath: Nylon
Packaging: Cardboard box with Extrema Ratio logos
Note: -

The Giant Mamba has a "tanto" blade in 6.3 mm thick Böhler N690 steel with a hardness of 58 HRC, flat edge and full length lightening.

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 conical opening for rapid insertion and extraction and a system that avoids shaking noises, it is equipped with a two-button safety flap, a thigh with anti-rotation rubber reinforcement and a reversible ambidextrous safety : simply pressing the trigger unlocks the blade.

 
Intended use: Tactical / Multirole

Type of production: Industrial
Country of production: Italy
Blade: in N690Co 58HRC stainless steel
Blade treatment: Satin
Handle: Forprene
Blade length: 163mm.
Blade thickness: 6.3mm.
Total length: 293mm.
Weight: 289g.
Sheath: Nylon
Packaging: Cardboard box with Extrema Ratio logos
Note: -

Japanese steel merges with Italian excellence

For this 2019/2020 collaboration, exclusive to Collini Cutlery, we have decided to offer a series of best sellers produced by Extrema Ratio. Knives made with the famous San Mai steel produced by the Japanese Takefu Steel. Specifically, for the central sheet we used the carbonaceous V-Toku2 at 62 / 63HRC and the stainless SUS410 for the two external sheets, in order to guarantee a very high cutting, penetration and sealing capacity of the wire together with an ease of regrinding and maintenance but at the same time the blade has a remarkable resistance to corrosion and an important increase in resilience given by the type of foreign steel and the laminated structure.

FULCRUM C model: for this First Production Run, a circulation of 10 pieces numbered from 1 to 10 was produced.

FULCRUM C is the compact version of FULCRUM, it maintains all the characteristics of solidity and robustness and, thanks to the reduced dimensions of the blade (only 110 mm) and the handle, it is easily portable and concealable. The rigid sheath can be positioned horizontally, vertically or in a 45 ° inclined position. The only safety of the sheath is automatic with extraction and re-insertion by pressure, this detail makes it an intuitive and extremely fast tool, particularly suitable for emergency use and for personal defense.

Use: backup knife
Blade: integral, in Japanese laminated steel (San Mai) with cutting edge in V-Toku2 (carbon) at 62 / 63HRC and external cheeks in SUS410 (stainless steel)
Blade thickness: 6.3 mm.
Blade length: 90 mm.
Total length: 210 mm.
Balancing: set back to 0.5cm. from the guard branch
Weight: 210g.
Sheath: ABS with Tek-Lok multiposition attachment
Notes: Numbered edition - cardboard box with Extremaratio logos and certificate

As in the ancient swords of the Japanese Samurai.

Rolled steel - imported into Italy from Collini Steel directly from the Japanese Takefu Steel - is based on the ancient Japanese tradition in the creation of the famous Samurai swords. Already in 1100 the expert Japanese blacksmiths in fact combined different materials to give the Katana swords incredible cutting capabilities combined with a resistance and flexibility previously unknown. It is thanks to this revolutionary construction technique that the swords from Samurai have been preserved to the present day becoming one of the most fascinating objects made by man. Following this tradition applied to modern metallurgy, we are now able to have technologically advanced steels already tested and used in cutlery also by famous brands such as Fallkniven, Cold Steel, Mcusta, Kai, Sog, Zwilling, Rockstead, etc.

Characteristics of San Mai steel: These are different types of metals bonded together to create a composite that encloses and intensifies the strengths of the metals taken individually:

- Longer tool life
thanks to the use of high quality steel with a high carbon content (V-Toku2, VG10, CoS, Shiro) or sintered (SPG2), in the heart of the sheet (Core Steel), the blade once hardened, reaches hardness and cutting performance significantly higher than that achieved with the use of traditional steels.

- Greater resilience
built with the principle of Japanese swords, multilayer steel is difficult to break thanks to the toughness of the central steel (Core Steel) and the elasticity of the steel used for the lateral coating (Stainless Steel).

- Better corrosion resistance
the steel used for the external layers (Stainless Steel) guarantees the blade a high resistance to corrosion. The combination of the two or more materials used by Takefu Steel generates, at the galvanic level, a structure that improves the corrosion resistance also on the wire.

- Easy processing even after heat treatment
although normally the steel becomes harder after hardening, the lateral steel used in multi-layer processing does not lose its softness and allows easy processing, drilling or welding even after heat treatment. For optimum performance of the blade, cryogenic treatment is recommended.

- Improvement of the aesthetic result
The knives made with multistate steel or with damask pattern at the end of the processing are aesthetically elegant, refined and highly appreciated by collectors all over the world.

After the success of the FULCRUM multi-role knife, the bayonet version was born. Like the FULCRUM, the bayonet is an extremely robust and versatile knife, the blade holds loads at break above 150 kg, the tip is very sturdy and the profile allows it to work for a long time with the knife without affecting the sharpening of the last section , which guarantees, together with the partial dorsal sharpening, to maintain the penetration capacity necessary for hand-to-hand combat against targets covered by heavy clothing, clothing and soft ballistic protections. The advanced center of gravity and the weight of the blade make it suitable for heavy field work. NFG version (No Fixing Gears, without rifle mount).

Intended use: tactical / military / multi-role

Blade: full tang in stainless steel N690Co 58HRC
Handle: removable in Forprene
Blade length: 180mm.
Blade thickness: 6.3mm.
Total length: 310mm.
Balancing: advanced, 1.5 cm from the lower guard branch
Weight: 378g.
Sheath: modular tactile with thread trimmer, thigh or belt, in Nylon and Kydex

Intended use: Tactical / EDC / Collection

Type of production: semi-handmade
Country of production: USA
Blade: CPM S35VN steel
Blade treatment: -
Handle: aluminum
Blade length: 68mm.
Blade thickness: 4mm.
Length closed: 83mm.
Total length: 135mm.
Thick when closed: 12mm.
balancing:
Weight: 68 gr.
Opening: -
Washers: -
Closure: Friction Folder (without block)
Clip: titanium, removable
Packaging: nylon bag with EOS logos
Note: -

Intended use: Tactical / EDC / Collection

Type of production: semi-handmade
Country of production: USA
Blade: CPM S35VN steel
Blade treatment: -
Handle: carbon fiber and aluminum
Blade length: 68mm.
Blade thickness: 4mm.
Length closed: 83mm.
Total length: 135mm.
Thick when closed: 12mm.
balancing:
Weight: 68 gr.
Opening: -
Washers: -
Closure: Friction Folder (without block)
Clip: titanium, removable
Packaging: nylon bag with EOS logos
Note: -

Intended use: Hiking / Backup

Type of production: Industrial
Country of production: Italy
Blade: Stainless Steel Bohler N690Co at 58HRC
Blade Treatment: Satin
Handle: Forprene
Blade Length: 118mm.
Blade thickness: 5mm.
Total Length: 232mm.
Weight: 145g.
Sheath: Kydex, compatible with M.O.L.L.E.
Packing: Cardboard box with Extrema Ratio logos

Intended use: Hiking / Backup

Type of production: Industrial
Country of production: Italy
Blade: Stainless Steel Bohler N690Co at 58HRC
Blade Treatment: Satin
Handle: Forprene
Blade Length: 103mm.
Blade thickness: 5mm.
Overall length: 217mm.
Weight: 141g.
Sheath: In Nylon, compatible with M.O.L.L.E.
Packing: Cardboard box with Extrema Ratio logos

Intended use: Hiking / Backup

Type of production: Industrial
Country of production: Italy
Blade: Stainless Steel Bohler N690Co at 58HRC
Blade Treatment: Brush MIL-C-13924
Handle: Forprene
Blade Length: 118mm.
Blade thickness: 5mm.
Total Length: 232mm.
Weight: 145g.
Sheath: In Kydex, compatible with M.O.L.L.E.
Packing: Cardboard box with Extrema Ratio logos

Intended use: Hiking / Backup

Type of production: Industrial
Country of production: Italy
Blade: Stainless Steel Bohler N690Co at 58HRC
Blade Treatment: Brush MIL-C-13924
Handle: Forprene
Blade Length: 103mm.
Blade thickness: 5mm.
Overall length: 217mm.
Weight: 141g.
Sheath: In Nylon, compatible with M.O.L.L.E.
Packing: Cardboard box with Extrema Ratio logos

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: 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)

The Lynx is designed to satisfy all users in the 'scope of the Hunt, the Bushcraft and Survival. Thickness and dimensions have been studied to facilitate precision work and at the same time be reliable even for heavy work. Handy and compact, it is the perfect companion for the outdoors.

Type of production: Artisan
Lama production: Italy
Blade: in steel D2 at 59 / 60HRC
Lama treatment: Black Blood
Handle: Micarta
Blade length: 105mm.
Blade thickness: 6.5mm.
Total length: 230mm.
Balancing: set back
Weight: 288g.
Sheath: Kydex, thermoformed, with Tek-Lok type connection
Package: -
Notes: Each knife is unique and handcrafted; there may be slight differences in finishes, colors and materials compared to the photographed product.

With the T4000 C continues the purest series so Extrema Ratio, for lovers of the profile of Japanese blades that do not want to give up the accessories typically tactical as sheath and handle.

Intended use: Tactical / Backup

Type of production: Industrial
Production Country: Italy
Blade: stainless steel Bohler N690Co to 58HRC
Treatment blade: Browning MIL-C-13924
Handle: Forprene
Blade length: 104mm.
Blade thickness: 4mm.
Length closed: -
Overall length: 208mm.
Thick when closed: -
Balancing: -
Weight: 196g.
Closing: -
Clip: -
Sheath: Nylon
Packaging: Cardboard box with logos Extrema Ratio
Notes: -

KNIFE WITHDRAWN FROM PRIVATE COLLECTION
* Origin: Collected from a private individual, previously purchased and used.
* Condition: Used, with obvious cosmetic signs of wear and tear, in no way compromising its use
* Commercially available: Discontinued, demilitarized version, without attachments and with top sharpening removed
* Sharpening: Factory (can be improved)
* Marks on blade: Various signs of wear, cosmetic in nature.
* Marks on handle: Various signs of wear, cosmetic in nature.
* Box: Present, original, complete
* Scabbard: Present, original, used, in good condition.
* Manuals, Certificates and Warranties: Present
* Checked and Certified by our in-house laboratory

Intended use: tactical/military/multi-role

Blade: full tang in N690Co 58HRC stainless steel with front upper portion of blade NOT sharpened
Handle: detachable in Forprene
Blade length: 180mm.
Blade thickness: 6.3mm.
Total length: 310mm.
Balance: advanced, 1.5cm from the lower guard branch
Weight: 378g.
Sheath: modular tactical with thread cutter, thigh or belt, Nylon - includes diamond sharpener and magnesium fire starter

Sheath: modular tactical with thread cutter, thigh or belt, Nylon - includes a diamond sharpener and magnesium fire starter

The United Cutlery GH5003 throwing knife set, designed by the legendary master knifemaker Gil Hibben, is an excellent choice for throwing enthusiasts and professionals. Each knife is made of 420 stainless steel, known for its strength and durability, and features a full tang skeletonized design, offering perfect balance and a secure grip. The sharp blade and aerodynamic shape ensure a stable trajectory and effective target penetration. The set includes three identical knives and a faux leather sheath, ideal for transport and storage. This kit is perfect for those looking to improve their accuracy with professional knives designed by an industry icon.

Intended use: Sport
Type of production: Industrial
Production Lama: China
Blade: stainless steel 420
Treatment Lama: -
Handle material: Leather Brown
Blade length: 12mm.
Blade thickness: 6mm.
Length closed: -
Total length: 2300mm.
Thick when closed: -
Balance: -
Weight: 194g.
Closing: -
Clip: -
Sheath: Leather Brown
Packaging: Cardboard box with logos Boker Plus
Notes: -

Knife distributed in 2000 pieces to the Alpine Body of the Italian Army as part of the "Nibbio" operation in Afghanistan

Target for use: tactical / military / multiruolo

Blade: full tang in stainless steel N690Co 58HRC
Manicure: Removable in Forprene
Blade Length: 180mm.
Blade thickness: 6.3mm.
Closed length: -
Total Length: 310mm.
Balancing: advanced, 1.5 cm from the lower guard branch
Weight: 325g.
Closure: -
Clip: -
Sheath: modular tactical, thigh or belt, in Nylon and Kydex
Notes: -