FOUR STAR is the top-selling knife series for ZWILLING worldwide. Honed and hand-finished by the most skilled artisans, this celebrated collection is the model of safety, ergonomics, and comfort. Thanks to their seamless transition from bolster to handle, the knives are comfortable to use for long periods of time. The bolster provides the right balance while acting as a safe finger guard. The knives are made of proprietary special formula steel that has been perfected for over 280 years. Combined with the signature ZWILLING ice-hardening technique, these FRIODUR blades are harder, sharper, they will NOT STAIN or chip and they retain their sharpness longer. Precision-forged from a single piece of steel, the SIGMAFORGE knives have an exceptionally sturdy, balanced and flexible blade.

• Special formula high carbon NO STAIN steel
• SIGMAFORGE knife is forged from a single piece of solid steel
• Ice-hardened FRIODUR blade starts sharper, stays sharper longer, and has superior resilience
• Precision-honed blade and laser-controlled edge ensures ideal cutting angle for sharpness and durability
• Ergonomic polypropylene handle permanently bonded for seamless accuracy and no gaps
• Ergonomic polypropylene handles permanently bonded for seamless accuracy and gaps
• 57 Rockwell Hardness = excellent edge retention. Edge angle 15° per side
• Manufactured in Germany