TWIN Signature knives are precision stamped from a single piece of German steel, resulting in lighter weight utility knives that do not compromise sharpness. The utility knife is 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 and is honed and hand-finished by the most skilled artisans. This German knife features a three-rivet handle embedded with the ZWILLING J.A. Henckels logo which provides optimum durability. QUALITY MANUFACTURING - Manufactured in Germany. Special formula high carbon NO STAIN steel EASY TO HANDLE - One-piece precision-stamped blade for a lighter weight utility knife without sacrificing strength KEEPS SHARP - Ice-hardened FRIODUR blade starts sharper, stays sharper longer, and has superior resilience BALANCED KNIFE - This German knife features an Ergonomic polymer handle which is perfectly bonded to full tang PERFECT DURABILITY - Traditional, three-rivet design is embedded with ZWILLING J.A. Henckels logo RETAINS EDGES - 57 Rockwell Hardness = excellent edge retention Edge angle 15 degrees per side.