Kyocera’s Advanced Ceramic Innovation series knives feature a proprietary zirconia Z212 black blade with a black, ergonomic, soft-touch handle for safe handling and control. The upward angle of the handle-to-blade design allows for easier cutting on a cutting board, a unique feature of the Innovation. Kyocera’s Z212 blade provides an ultra-sharp, ultra long-lasting edge (2X more than a traditional ceramic blade) and will never rust or react to acidic foods. Perfect for slicing fruits, vegetables and boneless meats only and not to be used for frozen or hard foods. Kyocera advanced ceramic cutlery and kitchen tools are fully warranted to be free of defects in material and craftsmanship.