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 honed and hand-finished by the most skilled artisans. The knives are made of proprietary special formula steel that has been perfected for over 280 years. Combined with ZWILLING’s signature ice-hardening 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 laser-controlled edge is incredibly sharp. The three-rivet handle embedded with the ZWILLING J.A. Henckels logo provides optimum durability.