TWIN Cermax – Cutting the Japanese Way. ZWILLING has scored a spectacular success with TWIN Cermax: in addition to the typical Japanese blade design, Japanese hand honing and the blade hardness of 66 Rockwell also add to the necessary sharpness. Thus TWIN Cermax is a high-quality product among the top-grade Japanese knives. A special triple-layered blade structure (Clad) – a corrosion-resistant stainless steel on the outside and the core made of the ultra-tough MultiCarbide powder steel – guarantees long-lasting sharpness. ZWILLING uses Micarta as TWIN Cermax’s handle material, a high-tech material made of linen and synthetic resin. It is highly robust but at the same time very comfortable to hold. The outstanding ergonomics and perfect balance allow for long-lasting and tireless work. The TWIN Cermax series comprises four types of knives.