Extrema Ratio is a knife manufacturer company specialized in tactical, rescue and survival knives.
The production level is: high industrial with artigianal cares.
Objective of the company is to produce high level performances tools affordable to the professional market.
Extrema Ratio is rising the military blades standards to the NEW MILITARY STANDARD.
We aim to reach this objective throgh the right choice of materials and process, without abusing of new fashionable materials, increasing the sperimentation and tests on the traditional ones to reach the highest performances and the better compromises.