Combat Knives
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Extrema Ratio Combat knives are made from Boehler steel N 690. This corrosion resistant steel is a martensitic chromium one, enriched with molybdenum and vanadium cobalt, with a content of chromium of minimum 17%. Its main feature is the elevated hardness which can be reached with high temper. The result is a blade with a very hard edge, sharp and longlasting and an elastic and through body.
