The Paderno World Cuisine 16.5cm Deba sushi knife is excellent for preparing sushi and vegetables. The blade is constructed of a special type of stainless steel for maximum edge retention. It has a razor-sharp edge and slip-resistant wooden handle. The knife has a traditional Japanese single bevel to ensure sharpness. The Deba knife is a heavy, thick knife designed for cutting and filleting the fish. The sharp edge makes for cleaner cuts through the soft flesh of fish. In order to avoid bruising or tearing delicate fish it is recommended to use a professional sushi knife. Cutting bones with this knife isn't recommended. It is best to hand wash and thoroughly dry these knives after use.