Made from KYOCERAs INNOVATIONblack patented proprietary zirconia material produced in Japan for exceptional quality and beauty Ultrasharp extremely hard advanced ceramic blade that maintains its sharpness 2x longer than KYOCERAs traditional ceramic blades Lightweight and easy to clean the ceramic blades will not brown nor transfer any metallic taste to food A unique softtouch ergonomic handle shape Fits comfortably in the hand for safe handling and control Ideal for slicing boneless meats boneless fish fruits and vegetables only Do not use for hard or frozen foods