ZWILLING J.A. Henckels presents the Four Star Chef’s Knife, a global icon of culinary precision honed by master artisans. Forged from a single piece of proprietary special formula steel, this Sigmaforge masterpiece features a Friodur ice-hardened blade for superior edge retention and rust resistance. The seamless transition from the ergonomic black matte handle to the bolster ensures perfect balance and safety, allowing for tireless performance. With a 15° edge angle and 57 Rockwell hardness, this full-tang essential reflects over 280 years of German engineering. This hand-finished instrument offers exceptional quality and performance for every meal, backed by a lifetime warranty.