Ittetsu Tadafusa OEM gyuto with 210 mm blade. The Gyuto is the Japanese version of the classic Western Chef's knife. The difference is that the gyuto's blade is thinner and holds a sharper edge. Blade is made of SLD steel by Hitachi. SLD is a cold work die steel with high abrasion resistance for general use, excellent harden-ability and minimal quench stress. Handle: ashtree / quince. Ittetsu knives are handmade in Echizen city, Japan. Hand wash with warm water and towel dry.