Extrema Ratio knives, distributed by Exxcess Quality Products, are known for their mix of Italian craftsmanship with strength and durability. Extrema Ratio knives have been used by elite Special Forces of the European nations as well as being currently carried by U.S. Soldiers in Iraq and Afghanistan. Extrema Ratio knives are a top choice of many military and special ops because of their corrosion resistant and durable stainless cobalt steel blades, their lightweight construction, high tolerances, and tensile blade strength. Exxcess Quality Products carries six fixed blade versions as well as five folders.