This is a large 7-sun 210mm Deba knife made by Masamitsu. It is a rare item. The steel used is Gin-san steel (Yasuki Steel Silver Paper), which provides excellent sharpness and is also highly resistant to rust. Please use it at home or at work. Length: 380mm Thickness: 9mm Blade length: 210mm Weight: Approximately 430 grams (Please note that there may be slight variations due to being handmade.) Please purchase with 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 overly concerned about minor details. "Gin-san steel" is a traditional stainless steel that has been widely used in the world of Japanese knives for a long time, and it is a steel material trusted by chefs even in Japanese knives that require sharpness. Hitachi Metals, which manufactures Yasuki steel such as White Steel and Blue Steel, created Silver Paper Steel as a rust-resistant stainless steel, and Gin-san steel is made by increasing the carbon content and increasing the hardness. It is a steel material that holds its edge for a long time even among stainless steels, so it is a knife suitable for those who use it for long hours.