Extrema Ratio, located in Prato, Italy, has designed, manufactured and sold tactical, combat, military, cooking, hunting and high performance knives since 1997, enjoying a great reputation in the military industry and tactical knives. The company offers a high-end product that meets the strictest standards, with production based on cutting-edge technology combined with craftsmanship. The Extrema Ratio design team uses the 3D system to design new models and create prototypes, choosing the best materials based on their durability, function and beauty. Each knife is then assembled by hand and inspected by the team of Extrema Ratio artisans. All knives are made of Cobalt N690 stainless steel with high strength, flexibility and the ability to take and keep a sharp edge. The tactical, combat and military Extrema Ratio knives are known for their outstanding ruggedness and for being tough enough to meet the requirements of the most demanding military standards.