(Please consider purchasing with other products as well.) This is a long-handled yanagiba knife, or sashimi knife, made by Seiko. 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 for your work, etc. Length: 450 mm Blade length: 300 mm (Please note that there may be slight variations due to being handmade.) Please purchase with understanding. Please refrain from purchasing if you are overly concerned about 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 among stainless steels, so it is a knife suitable for those who use it for long hours.