ZWILLING J.A. Henckels presents the Four Star Prep Knife, a culinary icon honed by master artisans. Precision-forged from a single piece of proprietary steel, this Sigmaforge essential features a Friodur ice-hardened blade for exceptional 57 Rockwell hardness and rust-resistant durability. The seamless transition from the black matte handle to the classic bolster provides the exquisite balance and safety required for prolonged use. With a 15-degree edge angle and superior retention, this specialty knife offers the precision every home chef deserves. Backed by a lifetime warranty, this dishwasher-safe tool blends over 280 years of German engineering into an accessible luxury.