Kyocera Advanced Ceramic LTD Series Santoku Knife with Handcrafted Pakka Wood Handle, 5.5-Inch, Black Blade Hand-finished ceramic blades are made from Kyocera's 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 Stainless steel bolster and rivets represent the traditional style of Japanese cutlery Lightweight and easy to clean, Kyocera ceramic blades will not brown food, are rust-proof and resistant to acids Ideal for slicing fruits, vegetables and boneless meats, not to be used on hard or frozen foods