Description About this item The Surgical Stainless Steel AISI 420 ( Martensitic Atmospheric Hardened ) blade gives perfect performance. An optimum chromium content, to reach the highest possible corrosion resistance in most enviroment. An adequate carboon content which ensures appropriate hardness level. A specific grinding system to help long lasting cutting edge retention. An ERGONOMICAL designed handle ensures easy handling & comfort even during prolinged use of the knife.