This is a large 7-inch (210mm) deba knife made by Masamitsu. It is a rare item. It is made of Ginsan steel (Yasuki steel silver paper), which is characterized by its excellent sharpness and rust resistance. Please use it at home or for work. Length: 380mm Spine thickness: 9mm Blade length: 210mm Weight: Approximately 430g (Please note that there may be slight variations as it is handmade.) Please purchase after your understanding. As this is a rare item, it may be out of stock. Please contact us before purchasing. Please refrain from purchasing if you are sensitive. Ginsan steel is a traditional stainless steel that has long been used in the world of Japanese knives, and it is a steel that has been trusted by chefs for Japanese knives that require sharpness. Ginsan steel was developed by Hitachi Metals, which also manufactures Yasuki steels such as Shirogami and Aogami, as a rust-resistant stainless steel. Ginsan steel is made by increasing the carbon content and hardness of this silver paper steel. It is a steel that stays sharp longer among stainless steels, making it suitable for those who use knives for extended periods.