(Please consider purchasing with other products as well.) This is a Yanagiba knife, or sashimi knife, made by Seiko. The steel used is Gin-san steel (Yasugi Steel Silver Paper), which provides excellent sharpness and is also highly resistant to rust. Please use it at home or at work. Length: 410 mm Blade length: 270 mm (Please note that there may be slight variations due to being handmade.) Please purchase with understanding. Those who are overly concerned should refrain from purchasing. "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 Yasugi 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 periods.