Knife - Essential Tool for Camping, Outdoor Adventure and collection

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

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

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

Intended Use: Multi-purpose / Utility / Tactical

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

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

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

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

Intended Use: Multi-purpose / Utility / Tactical

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

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

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

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

Intended Use: Multi-purpose / Utility / Tactical

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

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

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

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

Millennial heritage, modern innovation.

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

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

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

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

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

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

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

The FULCRUM is a milestone among multi-role knives.

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

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

Intended use: tactical/military/multipurpose

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

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

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

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

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

Intended use: Collection / Tactical

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

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