Extrema Ratio

Intended Use: Tactical/Emergency

Production type: Industrial
Country of Production: Italy
Blade: Stainless steel N690Co 58HRC
Blade Finish: Desert Warfare
Handle: Anodized Anticorodal Aluminum
Blade Length: 95mm.
Blade thickness: 4mm.
Length closed: 134mm.
Total length: 225mm.
Thickness when closed: 24mm.
Weight: 162g.
Closure: Liner Lock
Clip: Stainless Steel
Packaging: cardboard box with Extrema Ratio logos
Notes: belt cutter, glass breaker, optics screwdriver

Extrema Ratio Misericordia Desert, which preserves intact all the features of the famous Misericordia model adopted by the 4th Alpine Parachute Regiment, derives from the commemorative dagger made on the occasion of the 140th anniversary of the 4th Alpine Regiment and the 70th since the founding of the Alpine Paratroopers.

It is a tactical-type fixed-blade knife designed for those instances when the knife must be extremely light and compact. The new desert coloring also makes this model available in a shade in line with the most common needs of modern operational departments.

The blade is milled from Böhler N690 steel, hardened to 58 HRC for the best balance of edge retention and strength, is 118 mm long, 4mm thick, and has a flat edge. The weight of the knife is just 87g. The profile is a spear point type, with a full-length shank that makes it even lighter and with a ¾-length false counterblade. The finish is a stone washed type.

The knife's polymer handle features classic Extrema Ratio shells that make for a more secure grip and is attached to the tang by a through-screw. On the rear end the handle flows connecting with a wide ring equipped with a "skull crusher" appendage: a ring that allows the use of martial arts techniques and ensures the hand a very solid grip. In this version the handle is in Desert coloring.

Since this is a knife designed for professional use, much attention has been paid to ease of carrying, accessibility and extraction in case of need. The knife is secured to the sheath by a quick-release safety that can be easily reversed for left-handed use. The sheath is also in Desert coloring, made of high-strength Nylon, very versatile and equipped with 2 adjustable loops that allow it to be attached to M.O.L.L.E systems, facilitating quick extraction in various tactical scenarios.




Intended Use: Tactical / Multirole

Production Type: Industrial
Country of Production: Italy
Blade: stainless steel N690Co hardened to 58HRC
Blade treatment: Stonewashed
Handle: FRN (fiberglass reinforced nylon)
Blade length: 118mm.
Blade thickness: 4mm.
Total length: 233mm.
Weight: 87g.
Sheath: Nylon with two multi-position clips, designed for M.O.L.L.E. type attachments.
Packaging: cardboard box with Extrema Ratio logos
Notes: Rear Skull Crasher - Derived from the Black model, adopted by the 4th Alpine Parachute Regiment.

The K-Talon is a karambit with a particularly thin full tang structure that, including sheath and grips, reaches a thickness of only 10 mm. The curved, hooked blade is designed inspired by the shape of a claw. It is designed to achieve precise, deep cuts while simultaneously hooking, trapping and/or ripping.

The back ring is designed to achieve a strong and secure grip in all conditions preventing the knife from sliding back and making it exceptionally difficult to disarm or turn against the user.

The very thin Kydex sheath has a quick release and comes with paracord that allows it to be used as a neck knife or attached to MOLLE-system platforms.

Intended use: tactical

Type of production: industrial
Country of production: Italy
Blade: full tang, stainless steel N690Co 58/60HRC
Blade finish: Dark Stone Washed
Handle: anodized anticorodal aluminum
Blade length: 70mm.
Blade thickness: 4mm.
Total length: 175mm.
Weight: 130g.
Sheath: Kydex
Packaging: cardboard box with Extrema Ratio logos
Notes: possibility of using the scabbard with multi-position, M.O.L.L.E.-compatible attachment systems.

Satre Expeditions, as well as the Satre model from which it derives, is a fixed blade knife of small dimensions, light and extremely resistant. Given its characteristics, it can be used in a wide range of disciplines and uses or as part of an EDC (Every Day Carry) kit.

It has been designed in collaboration with Daniele Dal Canto, Master Advanced F.I.S.S. (Federazione italiana survival sportivo e sperimentale) instructor. In Neck Knife mode, through the use of a 550 paracord lanyard, it is possible to hold it around the neck keeping the knife vertical with the handle facing downwards.

The metal eyelets on the sheath, made of pre-shaped Kydex, allow the application of both the lanyard and the accessory holder. 

The full-tang skeletonized structure, allows you to customize the knife using Paracord as a coating for the handle.

Satre Expeditions uses Böhler N690 steel heat treated to 58 HRC with MIL-C-13924 burnishing and stone washed surface treatment (Dark Stone finish). It comes with a desert-colored pre-formed kydex sheath on which you can attach the Firesteel for lighting fires (provided inside the box).

Intended use: Neck knife / Hiking / Utility

Production type: industrial
Country of production: Italy
Blade: Stainless steel N690Co 58
Blade finish: Burnishing MIL-C-13924 with Dark Stone finish
Handle: Stainless steel N690Co 58
Blade length: 70mm.
Blade thickness: 5mm.
Total length: 163mm.
Weight: 78g.
Scabbard: Kydex, for neck.
Packaging: 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).

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).

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).

Satre is a small, light and extremely resistant fixed blade knife. Given its characteristics, it is used in a wide range of disciplines and uses ranging from survival activity, bushcraft or as an element of an EDC (Every Day Carry) kit.

It was designed in collaboration with Daniele Dal Canto, Master Advanced F.I.S.S.S. (Italian Federation of Sports and Experimental Survival).

In Neck Knife mode, through the use of a paracord 550 cord, it is possible to keep it around the neck by keeping the knife vertically with the handle facing downwards. The metal eyelets on the sheath made of pre-shaped Kydex allow the application of both the lanyard and the accessory holder.

The full-tang skeletonized structure allows you to customize the knife using paracord as a coating for the handle

This Black version uses the Böhler N690 heat treated at 58 HRC. This material is chosen for its resistance to oxidation, the durability of the wire and above all the reliability it has shown over the years.

Intended use: Neck / Hiking / Utility Knife

Type of production: industrial
Country of production: Italy
Blade: stainless steel N690Co 58 / 60HRC
Blade treatment: Black
Handle: stainless steel N690Co 58 / 60HRC
Blade length: 70mm.
Blade thickness: 5mm.
Total length: 163mm.
Weight: 78 g.
Sheath: in Kydex, for neck
Packaging: Cardboard box with Extrema Ratio logos
Note: possibility to use the sheath with Ulti-Clip systems, M.O.L.L.E. o Tek-Lok (available separately)

Satre is a fixed blade knife of small dimensions, light and extremely resistant. Given its characteristics, it can be used in a wide range of disciplines and uses ranging from survival activities, bushcraft or as an element of an EDC (Every Day Carry) kit.

It has been designed in collaboration with Daniele Dal Canto, Master Advanced F.I.S.S. (Federazione italiana survival sportivo e sperimentale) instructor.

In Neck Knife mode, through the use of a 550 paracord lanyard, it is possible to hold it around the neck keeping the knife vertical with the handle facing downwards. The metal eyelets on the sheath, made of pre-shaped Kydex, allow the application of both the lanyard and the accessory holder.

The full-tang skeleton structure, allows to personalize the knife using the Paracord as a coating for the handle.

The Stone Washed version uses Böhler N690 heat treated to 58 HRC. This material is chosen for its ability to resist oxidation, the durability of the edge and above all the reliability it has shown over the years.

Intended Use: Neck Knife / Hiking / Utility

Type of production: industrial
Country of production: Italy
Blade: Stainless steel N690Co 58/60HRC
Blade Treatment: Stone Washed
Handle: Stainless steel N690Co 58/60HRC
Blade length: 70mm.
Blade thickness: 5mm.
Total lenght: 163mm.
Weight: 78g.
Scabbard: Kydex, for neck.
Packaging: Cardboard box with Extrema Ratio logos.
Notes: possibility to use the scabbard with Ulti-Clip, M.O.L.L.E. or Tek-Lok systems (available separately).

Il BF2 è un chiudibile “full size” particolarmente indicato per l’impiego professionale da parte di operatori militari e di polizia sul campo. L’impugnatura è salda e confortevole; la clip, reversibile ed avvolgente, diventa un utile e comodo appoggio per il pollice in “reverse grip”. La guancetta è piena con i caratteristici piani ribassati per impegnare i “pin” d’apertura senza che sporgano dal profilo del coltello chiuso. La lama, disponibile in versione drop o tanto, ha l’arrotatura piatta e, come nel BF1, la punta particolarmente spessa e resistente. Il meccanismo di blocco della lama è il collaudato LINER-LOCK, coadiuvato da un meccanismo di sicura da azionare manualmente protetto da un carter. 

Destinazione d'uso: Tattico/Militare

Tipo di produzione: industriale
Lama: in acciaio inox N690Co 58HRC
Paese di produzione: Italia
Impugnatura: Anticorodal
Lunghezza lama: 90mm.
Spessore lama: 3mm.
Lunghezza chiuso: 124mm.
Lunghezza totale: 210mm.
Bilanciatura: -
Peso: 142g.
Chiusura: Liner Lock
Clip: reversibile ed amovibile in acciaio inox
Fodero: -
Note: Fermo di sicurezza a coltello aperto

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: -

Japanese steel merges with Italian excellence

For this 2021 collaboration, exclusive to Coltelleria Collini, we have decided to propose a series of best sellers produced by Extrema Ratio. Knives made with the famous San Mai steel produced by the Japanese Takefu Steel. Specifically we have used the carbonaceous V-Toku2 at 62/63HRC for the central plate and the stainless SUS410 for the two external plates, in order to guarantee a very high cutting capacity, penetration and edge holding together with an easy resharpening and maintenance but at the same time the blade has a remarkable resistance to corrosion and an important increase of resilience given by the type of extreme steel and the laminated structure.

Intended Use: Neck Knife / Collector's Knife

Type of production: Industrial
Country of Production: Italy
Blade / Handle: Full, laminated Japanese steel (San Mai) with V-Toku2 (carbonaceous) cutting edge at 62/63HRC and SUS410 (stainless steel) outer cheeks
Blade finish: Satin finish
Blade length: 40mm.
Blade thickness: 3mm.
Total length: 129mm.
Weight: 55g.
Sheath: Kydex, for neck.
Packaging: Cardboard box with Extrema Ratio logos.
Notes: Numbered edition - cardboard box with Extremaratio logos and certificate - the central core of the blade and handle is made of carbon steel so it is recommended to wash/dry the knife very well after each use and protect the steel, during storage, with a light surface of lubricant to avoid rust and oxidation.

As in the ancient swords of the Japanese Samurai.

The rolled steel - imported in 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. As early as 1100, expert Japanese blacksmiths combined different materials to give Katana swords incredible cutting capabilities combined with previously unknown strength and flexibility. It is thanks to this revolutionary construction technique that the Samurai swords have been preserved until our days 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: It is made of different types of metals alloyed together to create a composite that contains and intensifies the strengths of the metals individually taken:

- Longer cutting edge life
thanks to the use of high quality steels with a high carbon content (VG10, CoS, Shiro) or sintered (SPG2), in the core steel, the blade, once hardened, reaches hardness and cutting performance decidedly superior to those achieved with the use of traditional steels.

- Greater resilience
Built on the principle of Japanese swords, the 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).

- Improved corrosion resistance
The steel used for the outer layers (Stainless Steel) gives the blade a high resistance to corrosion. The combination of the two or more materials used by Takefu Steel generates, at a galvanic level, a structure that improves corrosion resistance even on the edge.

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

- Improved aesthetic performance
Knives made of multi-state steel or damask pattern at the end of the processing are aesthetically elegant, refined and highly appreciated by collectors all over the world.

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: -

Project born with the brand of Collini KNIVES.IT cutlery

Custom Kydex sheath, made by Simone Tonolli, designed as an additional replacement for the Tengu knife

Type of production: Custom
Country of production: Italy
Material: thermoformed Kydex
Type of sheath: in "taco" format, with 8 steel rivets, designed for concealed carry or deep carry
Length: 165mm.
Width: 43mm.
Thickness: 8mm.
Weight: 25g.
Packaging: -
Notes: clip or coupling system not present / not supplied, sold separately, compatible with systems such as Ulti-Clip or M.O.L.L.E.
Compatibility: compatible only with the TENGU model by Coltelleria Collini, Knives.it, created in collaboration with Extrema Ratio

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 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: 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
Note: -

On December 19, 1941, in Eluet El Asel, about 400 men from the 1st Royal Carabinieri Battalion Paratrooper faced the assault of 4 battalions of Indian troops of the British Army. Jumping from their trenches by launching improvised devices, the "Desert Lions", as Radio London called them, made the defensive line impenetrable by allowing thousands of Italian-German troops to withdraw safely. This was the first page in the long history of Italian paratroopers.

The Tuscania Paratrooper Regiment asked that the Extra Ratio T911 be specifically made as a commemorative knife for its 80th anniversary.

The T911 is a medium-sized folding light and designed for professional use by military operators. It is equipped with a modified spear point blade, flat edge, in Bohler N690 cobalt steel heat-treated to a hardness of 58 HRC, for the best compromise between strength, ease of regrinding and thread hold. The blade is 76 mm long, 4 mm thick, has a stone washed finish and rotates around an adjustable pin which allows to obtain the best fluidity in opening. A brace allows you to lock the pin in the best position.

The handle is in Anticorodal aluminum alloy with high strength black anodized finish and is milled to facilitate the transition from "reverse grip" handle to saber handle.

The blade is opened by means of a pin operated with the thumb. The knife uses a liner lock type blade lock and a safe ensures maximum hold even during heavy use. The safety lever is colored red for better visibility and engages in an advanced position for more instinctive use.

In the handle are integrated a seat belt cutter with easily available and replaceable cutter-type blade, a tungsten glass breaker, a stainless steel knot loosener and a screwdriver for adjusting the pointing optics, in AISI 420 steel. The clip , reversible and fixed at the end of the handle, allows a very deep port in the pocket, for less visibility.

The knife can be dismantled for cleaning and maintenance. With a total length of 194 mm and a weight of 145g, the T911 is easy to wear both in uniform and in civilian clothes.

Intended use: Tactical / Emergency

Type of production: Industrial
Lama production: Italy
Blade: N690Co 58HRC stainless steel
Blade treatment: Stonewashed
Handle: Anticorodal
Blade length: 76mm.
Blade thickness: 4mm.
Length closed: 118mm.
Total length: 194mm.
Thick when closed: 24mm.
Weight: 145g.
Closing: Liner Lock
Clip: Stainless steel
Packaging: black cardboard box with Extrema Ratio logos
Notes: belt cutter, glass breaker, screwdriver for optics, stainless steel knot loosers

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: 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

Born from the revisitation of the 39-09 model, the Nimbus was developed and chosen by the 183rd "Nembo" Paratrooper Regiment as a commemorative knife of the events of Case Grizzano which on 19 April 1945 saw the Nembo paratroopers engaged against the paratroopers of a German division . The clashes raged for 12 hours and were often resolved by hand-to-hand combat with the white weapon. A few days after the end of the Second World War one third of the battalion's men remained on the field, but their sacrifice led to the conquest of the battle. The knife in addition to wanting to commemorate an important event of our Armed Forces is the result of a development that has been carefully studied also in the technical aspects, so as to make it suitable for a concrete operational use.

Particular attention has been paid to taking care of the dimensions, the shape and the search for solutions such as the kydex sheath, which is designed to make the knife an instrument capable of adapting to the most complex requirements of the port.

The light and compact blade meets the demands of a modern tactical knife today.

Intended use: Collection

Type of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Blade treatment: Satin finish
Handle: Wood
Blade length: 141mm.
Blade thickness: 5mm.
Total length: 263mm.
Weight: 203g.
Sheath: in Leather
Packaging: display case
Notes: -

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

Medium folding of the BD series. It is produced with an aluminum handle that enhances its resistance and lightness, also thanks to the steel frame. The model maintains all the features of the BD2 updated with the new opening system High Speed Razor Opening ..

Intended use: Sports / EDC

Type of production: Industrial
Lama production: Italy
Blade: Stainless steel N690Co 58HRC
Blade treatment: Satin
Handle: Anticorodal
Blade length: 95mm.
Blade thickness: 3mm.
Length closed: 128mm.
Total length: 224mm.
Thick when closed: 17mm.
Weight: 105g.
Closure: Liner Lock
Clip: removable in stainless steel
Packaging: cardboard box with Extrema Ratio logos
Note: -

Model: Lightened version of the classic Fulcrum Bayonet, with shearder, stone washed blade, desert handle and desert nylon sheath.

Intended use: tactical / military / multi-role

Blade: full tang in stainless steel N690Co 58HRC
Handle: dismountable in Forprene
Blade length: 180mm.
Blade thickness: 6.3mm.
Length closed: -
Total length: 310mm.
Balancing: advanced, 1.5 cm from the lower guard branch
Weight: 378g.
Closure: -
Clip: -
Sheath: modular tactical with shear, thigh or belt, in Nylon and Kydex
Note: -

Intended use: Tactical

Type of production: Industrial
Lama production: Italy
Blade: Stainless steel N690Co 58HRC
Lama treatment: Satin
Handle: Anticorodal
Blade length: 122mm.
Blade thickness: 3mm.
Length closed: 150mm.
Total length: 277mm.
Thick when closed: 17mm.
Balancing: -
Weight: 137g.
Closure: Liner Lock
Clip: removable in stainless steel
Sheath: -
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

It is a small basic folder, produced with a technopolymer handle that enhances its resistance and lightness, thanks also to the steel frame. The blade locking mechanism is the tried and tested LINER-LOCK. The model keeps all the features of the BF0 updated with the new High Speed Razor Opening opening system. Available in the following versions: BF0 R CD Desert with stone washed blade and HCS and BF0 R CD Stone Washed with stone washed blade and black grip.

Type of production: industrial
Blade: stainless steel N690Co 58HRC
Country of production: Italy
Handle: Nylon with stainless steel folders
Blade length: 55mm.
Blade thickness: 2.5mm.
Length closed: 85mm.
Total length: 140mm.
Weight: 53g.
Closure: Liner Lock
Clip: reversible and removable, in stainless steel

It is a small basic folder, produced with a technopolymer handle that enhances its resistance and lightness, thanks also to the steel frame. The blade locking mechanism is the tried and tested LINER-LOCK. The model keeps all the features of the BF0 updated with the new High Speed Razor Opening opening system. Available in the following versions: BF0 R CD Desert with stone washed blade and HCS and BF0 R CD Stone Washed with stone washed blade and black grip.

Type of production: industrial
Blade: stainless steel N690Co 58HRC
Country of production: Italy
Handle: Nylon with stainless steel folders
Blade length: 55mm.
Blade thickness: 2.5mm.
Length closed: 85mm.
Total length: 140mm.
Weight: 53g.
Closure: Liner Lock
Clip: reversible and removable, in stainless steel

Intended use: Tactical / Sports

Type of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co 58HRC
Blade treatment: Desert Warfare
Handle: Anticorodal
Blade length: 70mm.
Blade thickness: 3mm.
Length closed: 99mm.
Total length: 168mm.
Thick when closed: 11mm.
Weight: 85g.
Opening: Ambidextrous opening pin on the blade
Washers: Teflon
Closure: Liner Lock
Clip: stainless steel, deep pocket type, removable and reversible
Sheath: -
Packaging: cardboard box with Extrema Ratio logos
Note: -

Multi-purpose tactical knife with a light weight and very well-grip. The stiletto type blade is sharpened only on one side and has a guard. The Requiem is equipped with the innovative nylon liner Aspis expressly studied by Extrema Ratio to allow the quick release of the blade and the fixing inside the passages of the M.O.L.L.E system, thanks to two multiposition clips.

Intended use: Tactical / Multirole
Type of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co hardened to 58HRC
Blade treatment: Satin
Handle: Forprene
Blade length: 118mm.
Blade thickness: 4mm.
Total length: 238mm.
Weight: 86g.
Sheath: Nylon with two multiposition clips, designed for M.O.L.L.E.
Packaging: cardboard box with Extrema Ratio logos
Note: -

Multi-purpose tactical knife with a light weight and very well-grip. The stiletto type blade is sharpened only on one side and has a guard. The Requiem is equipped with the innovative nylon liner Aspis expressly studied by Extrema Ratio to allow the quick release of the blade and the fixing inside the passages of the M.O.L.L.E system, thanks to two multiposition clips.

Intended use: Tactical / Multirole
Type of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co hardened to 58HRC
Blade treatment: Satin
Handle: Forprene
Blade length: 118mm.
Blade thickness: 4mm.
Total length: 238mm.
Weight: 86g.
Sheath: Nylon with two multiposition clips, designed for M.O.L.L.E.
Packaging: cardboard box with Extrema Ratio logos
Note: -

Multi-purpose tactical knife with a light weight and very well-grip. The stiletto type blade is sharpened only on one side and has a guard. The Requiem is equipped with the innovative nylon liner Aspis expressly studied by Extrema Ratio to allow the quick release of the blade and the fixing inside the passages of the M.O.L.L.E system, thanks to two multiposition clips.

Intended use: Tactical / Multirole
Type of production: Industrial
Country of production: Italy
Blade: stainless steel N690Co hardened to 58HRC
Blade treatment: Satin
Handle: Forprene
Blade length: 118mm.
Blade thickness: 4mm.
Total length: 238mm.
Weight: 86g.
Sheath: Nylon with two multiposition clips, designed for M.O.L.L.E.
Packaging: cardboard box with Extrema Ratio logos
Note: -

A compact and compact multi-role knife with ABS fast release sheath with two multiposition clips and tight enough to be secured inside the passers-through of the M.O.L.L.E. - Available in four color variants: Black, Desert, Ranger Green and HCS (Hybrid Coyote Sage)

Intended use: tactical / multi role

Type of production: industrial
Country of production: Italy
Blade: N690Co stainless steel hardened to 58HRC
Blade Treatment: Satin
Handle: Forprene
Blade Length: 116mm.
Blade thickness: 4mm.
Total Length: 237mm.
Weight: 85g.
Sheath: in ABS with two multiposition clips, designed for type M.O.L.L.E.
Packing: Cardboard box with Extrema Ratio logos
Notes: -

Panthera is a new folding that retains all the features of the T-Razor, from which it draws inspiration, with the difference that the dorsal part of the blade goes down towards the tip, like the wharncliff blades. The knife presents the new Razor opening high speed opening system.

Intended use: Sports / Tactical

Type of production: industrial
Blade: stainless steel N690Co 58HRC
Country of production: Italy
Handle: Anticorodal Anodised aluminum
Blade length: 100mm.
Blade thickness: 3mm.
Length closed: 165mm.
Total length: 247mm.
Weight: 130g.
Closure: Liner Lock
Clip: absent
Sheath: absent
Note: -

Panthera is a new folding that retains all the features of the T-Razor, from which it draws inspiration, with the difference that the dorsal part of the blade goes down towards the tip, like the wharncliff blades. The knife presents the new Razor opening high speed opening system.

Intended use: Sports / Tactical

Type of production: industrial
Blade: stainless steel N690Co 58HRC
Country of production: Italy
Handle: Anticorodal Anodised aluminum
Blade length: 100mm.
Blade thickness: 3mm.
Length closed: 165mm.
Total length: 247mm.
Weight: 130g.
Closure: Liner Lock
Clip: absent
Sheath: absent
Note: -

Combat version of the Scout model with ultra-slim shape. The 103 mm blade is lightened in its structure by the bloodstream. It is produced in two versions: with single guard and upper grip or, in the DG version, with double guard for a safer grip in the bushes. It comes with black Kydex sheath with attachment to the M.O.L.L.E. system.

Intended use: Tactical
Type of production: Industrial
Country of production: Italy
Blade: Stainless Steel Bohler N690Co at 58HRC
Blade Treatment: MIL-C-13924 PVD
Handle: Forprene
Blade Length: 103mm.
Blade thickness: 5mm.
Total length: 217mm.
Weight: 136g.
Sheath: Kydex, compatible with M.O.L.L.E.
Packing: Cardboard box with Extrema Ratio logos