TWIN Signature knives are precision stamped from a single piece of German steel, resulting in lighter weight knives that do not compromise sharpness. The knives are made of proprietary special formula steel that has been perfected over the years. Combined with ZWILLING's signature icehardening technique, these FRIODUR blades are harder, sharper, they will NOT STAIN or chip and they retain their sharpness longer.To ensure an ideal cutting angle, the lasercontrolled edge is incredibly sharp and is honed and handfinished by the most skilled artisans. The threerivet handle embedded with the ZWILLING J.A. Henckels logo provides optimum durability.