The Zwilling four-star series is the best-selling Zwilling knife series worldwide and, thanks to its seamless all-plastic handle, is a pioneer of high-quality standards for chef's knives. Handle material: plastic, seamless transition from bolster to handle, special stainless steel, Zwilling special melt, Friodur blade, ice-hardened, Sigmaforge knife - forged from one piece for an exact cut. Hand wash recommended.