Kyocera Advanced Ceramic Revolution Series 5-inch Slicing Knife, Black Handle, White Blade Made from Kyocera's very own proprietary zirconia material produced in Japan for exceptional quality and beauty Ultra-sharp, pure advanced ceramic blades will maintain their edge up to 10x longer than steel blades Lightweight and easy to clean, these ceramic blades will not brown food, are rust-proof and resistant to germs and acids Ideal for slicing fruits, vegetables and boneless meats, not to be used on hard or frozen foods Utra-sharp 5 1/4-inch ceramic slicing knife with white blade; ideal for cutting meats as well as thin slices of fruits and vegetables Ceramic blade ground to microscopic precision by diamond wheels for rock-like edge with excellent sharpness retention Totally impervious to acids, juices, oils, salts or other elements; will never rust Lightweight, extremely balanced in the hand; ergonomic handle reduces fatigue during repetitive cutting Hand wash only; sharpen using Kyocera electric sharpener or mail to Kyocera for free sharpening