EXTREMA RATIO
Extrema Ratio is specialized in the development and production of professional knives for military, public security and rescue use. We produce high-level military, tactical and hunting knives as well as a great range of solid knives suitable for the toughest of environments, making them a great choice for a survival knife or a backup tool. The range goes from small folders to large Kukris, offering exactly what you expect from a high-end professional tool.
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Heavy‑duty outdoor folding knife designed to work in the field – not to stay in your pocket.
Universal knife Numen
Tactical folding knife MF1 Evo
Survival knife Ontos II
A gentleman’s knife, both reliable and resistant, designed for professionals and style lovers.
Corvo Last Call limited series of only 70 pieces
