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Extrema Ratio knives, military knives, police knives and survival knives not only for professional use - Made in Italy. Extrema Ratio is one of the special knife manufacturers with the latest high-tech manufacturing processes. By consistently maintaining its products at a high level, the company has become known worldwide. Extrema Ratio from Prato, Italy, was founded in 1997 as a handicraft company and has since been producing highly functional, robust knives in cooperation with military units, police and rescue forces.  Tactical mission knives for special and rescue units as well as emergency and survival knives and collector's knives were added. For many years, Extrema Ratio has also held a position in the private sector as well as among knife collectors. Quality simply prevails! Quality and functionality as well as handling are still in the foreground today and are adapted to the circumstances and technical requirements. The use of high-quality materials, also from space technology, as well as new production methods, but also the craftsmanship play a major role. Because every blade of an original Extrema Ratio tool is ground and sharpened by hand. Each knife series is tested in various test procedures and achieves top marks with comparable tools. With a knife from Extrema Ratio you acquire a modern, robust tool with many uses, Made in Italy.  At MESSERWORLD you always get original Extrema Ratio knives and tools.