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, so 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 trusted by chefs even for 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 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.