Sujihiki Ittetsu with 270 mm blade is a double edge slicing knife with a long narrow blade that smoothly slices through meat or vegetables and preserves the integrity of each ingredient's freshness. This Ittetsu sujihiki is made from 3 layers of material: iron clad and Shirogami steel. A layer of iron on each side protecting a layer of carbon steel at the core, in a process referred to as Sanmai or forge welding. Iron and carbon steel are both susceptible to rust and must be kept dry and clean at all time’s to avoid oxidation and discolouration. Handle: waterproof mono octagonal walnut. Ittetsu knives are handmade in Echizen city, Japan. Hand wash with warm water and towel dry.