This is a Kaseki usuba (thin-bladed knife). The blade length is approximately 20cm. The steel type is unknown. It has a "Betsu-atsurae" (custom-made) inscription. The handle is made of white buffalo horn. With a blade length of 20cm, this usuba has a substantial feel, so much so that when you hold it, you might mistake it for a hamo-kiri (knife for cutting conger eel). Many people think of usuba knives as being for vegetables, but they were originally all-purpose knives, so their uses are quite broad. The inscription of the maker's mark has become faint due to polishing. After repairing rust and scratches, the blade was mirror-finished, so some fine scratches remain. If you don't mind them, I recommend it. Overall, it is in clean condition with no scratches or dirt, so I believe it can be used for a long time. Both the cutting edge and the flat of the blade are almost mirror-finished. The weight balance is good, and it is recommended for professionals and general households alike. The blade has been finished with a Kitayama 8000 grit whetstone, a Shapton 12000 grit whetstone, and a natural whetstone. It is in a very sharp condition and can be used immediately. ● Size: Blade length approx. 200mm ● Blade thickness: Approx. 3.8mm at the thickest part at the heel ● Overall length: 355mm ● Weight: 179g #Knife #Usuba #Kaseki #20cm