Extrema Ratio

Extrema Ratio

Extrema Ratio, located in Prato, Italy, has been designing, manufacturing and selling high performance combat knives since 1997 enjoying a reputation for excellence that is unsurpassed in the military and tactical knife industry.

The increased capacity through the years enabled Extrema Ratio to extend its operations. As part of this effort, the company moved in 2004 to a new 600 square meter facility in order to meet the market demand and the company quickly established itself as one of the country's leading cutlery manufacturers.

Extrema Ratio serves military and law enforcement communities as well as commercial markets and the knives are well known and sought after all over the globe.

The company prides itself in design, material and quality to deliver a high end product that meets the most severe mil-standards.

The production based on modern cutting edge technology is combined with traditional craftsmanship and the result is the pinnacle of this synthesis. The Extrema Ratio design team uses the 3D system to design new models and create prototypes. Each knife design is then meticulously inspected and then field tested. At this point the finest materials are chosen for durability, function and beauty. Each knife is then hand assembled and hand finished and inspected by Extrema Ratio team of craftsmen.

First class handwork and well-selected material have contributed to form the image of the Extrema Ratio trademark all over the world.

Each knife that is manufactured at Extrema Ratio has measured up to the Company rigorous standards for quality and performance. The knives are the result of painstaking research and development. This is an Extrema Ratio hallmark. Extrema Ratio knives represent a real, solid value for the money.

All of the knives are made from N690 Cobalt Stainless Steel which is a steel from a small plant in Austria, often used in the manufacture of surgical instruments. This steel along with their tempering methods produce a steel of great strength, flexibility with the capability to take and retain a razor sharp edge. The handles provided on the fixed blade knives are made from a grip polymer called Forprene which provides a very sure and comfortable grip even when wet. The folding range of knives have a shell made from a super strong anticorodal alloy and the best materials are used throughout to ensure reliability and longevity.

Extrema Ratio military knives are consistently developed with the direct involvement of the end user.

Extrema Ratio creates a great range of tough knives suitable for use in the toughest of environments, making them a great choice for a survival knife or back up tool. The range goes from small folders to large Kukri with lots of choice in between offering most of what you would need in the knife area.

Extrema Ratio knives are developed in close cooperation with the Italian and foreign Armed Forces. To achieve best performance and function, no compromises are made in the design. This makes Extrema Ratio Knives best known for their outstanding ruggedness and they are sturdy enough to meet the requirements of the toughest military standards.

To reach all of the above, a long term co-operation project between the Facoltà di Scienze Motorie (PG) and Extrema Ration Company has been set up.

Through the challenges associated with resolving technical issues, finding an efficient and ergonomic design and optimal operating parameter, the Facoltà di Scienze Motorie (PG) partnership has provided innovative opportunities through the whole manufacturing process.

Extrema Ratio is UNI EN ISO 9001:2008 certified and is an official supplier of the Armed Forces with NATO code (N/CAGE) AD856

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Glauca J1
Extrema Ratio
Glauca J1
This folding knive has been developed together with material experts of Jagdkommando Unit, the Austrian Army special ...
€507.00 * €451.23 *
Fulcrum II
Extrema Ratio
Fulcrum II
This model is the evolution of the FULCRUM Folder, the first folding knife produced by Extrema Ratio according to the...
€378.00 * From €336.42 *
M.P.C.
Extrema Ratio
M.P.C.
The MPC is one of the more robust folding knives on the market, it incorporates all the characteristics of the Fulcru...
€449.00 * From €399.61 *
HF1
Extrema Ratio
HF1
This folding knife is projected for those who are looking for sturdiness and reliability of a fixed blade but also fo...
€359.00 * From €319.51 *
HF 2
Extrema Ratio
HF 2
schwerer Folder mit dicker Klinger und Sicherung
€374.00 * From €332.86 *

schwerer Folder mit dicker Klinger und Sicherung

RAO
Extrema Ratio
RAO
In June 2006, the “185° Rgt. Ricognizione e Acquisizione Obiettivi” (Target Acquisition Regiment) airborne “FOLGORE” ...
€359.00 * €319.51 *
RAO Avio
Extrema Ratio
RAO Avio
RAO AVIO is the survival version chosen by the Italian Air Force to complement the equipment package of Euro ghter Ty...
€464.00 * €412.96 *
RAO II
Extrema Ratio
RAO II
The Extrema Ratio RAO is a very solid tactical folding knife with a very heavy and strong blade, provided with an ext...
€359.00 * €319.51 *
Police III
Extrema Ratio
Police III
A compact emergency tool useful for both urban use and emergency operations/MVA rescue. The main blade is designed fo...
€341.00 * €303.49 *
Police Evo
Extrema Ratio
Police Evo
Extrema Ratio jointly developed the multipurpose folding knife POLICE EVO with the Italian State Police. It features ...
€481.00 * €428.09 *
Police SM
Extrema Ratio
Police SM
Evolved from the POLICE III, it was designed to the speci c requirements of battle eld medicine and medical rescue co...
€357.00 * €317.73 *
TK Tool 2.0
Extrema Ratio
TK Tool 2.0
A multifunctional tool with a basic and essential design, jointly developed with military professionals. It features ...
€49.00 * From €43.61 *
Mamba
Extrema Ratio
Mamba
Multipurpose tactical knife with quick release
€151.00 * From €134.39 *

Multipurpose tactical knife with quick release

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