Extrema Ratio make knives to a military specification. Thus all there products meet the highest of standards and are manufactured with CNC high precision milling machinery. The assembling, quality control and sharpeni...

Extrema Ratio make knives to a military specification. Thus all there products meet the highest of standards and are manufactured with CNC high precision milling machinery. The assembling, quality control and sharpeni...

This "special" purpose knife has been expressly developed and officially adopted by the 9 REGGIMENTO D'ASSALTO PARACADUTISTI "COL MOSCHIN", elite unit of FOLGORE brigade of ITALIAN ARMY. The blade is made with N690 co...

The second in a series that is the company's flagship, the Dobermann, was the first knife with the brand name Extrema Ratio. The second generation is a synthesis of all the experience accumulated by the company in th...

The idea for this knife originated following the use of the multipurpose Fulcrum EI by the Italian "Nibbio" Contingent in Afghanistan. The excellent results obtained through the use of the Fulcrum EI gave rise to the ...

The blade is made with NB90 Cobalt Stainless Steel which is a high performance steel with excellent cutting and sharpening characteristics. The blade is a flat grind and has 5BHRC hardness.
The KRATON handle is...

Extreme Ratio Knives have produced this knife to the most exacting standards. The tanto style blade is made from N690 stainless cobolt steel and has a polymerical coating with a high level of resistance towards corros...

Made to military specs, this folder series was developed to substitute, or compliment, a fixed blade. To reach this result, Extrema Ratio used only the hardest, thickest materials and a very safe, well tested locking ...

Made to military specs, this folder series was developed to substitute, or compliment, a fixed blade. To reach this result, Extrema Ratio used only the hardest, thickest materials and a very safe, well tested locking ...

Extreme Ratio Knives have produced this knife to the most exacting standards. The tanto style blade is made from N690 stainless cobolt steel and has a polymerical coating with a high level of resistance towards corros...

Extreme Ratio Knives have produced this magnificent knife, with the Tanto style blade made of N690 Stainless Cobalt Steel, which has extraordinary mechanical and cutting features.

The sheaths for this series are...

The no compromises field knife, robust, efficient and heavy. The grindings on the Extrema Ratio Golem II are flat and the point is thickset, a knife you can really count on for the toughest of jobs. The upper grinding...