This is an Aritsugu Kamagata Usuba knife (chamfering knife). Blade length is approximately 10cm. It is single-edged. The steel is unknown. It has a special engraving. It has a brass-wrapped handle. This is an Aritsugu Kamagata knife. Based on the size, I believe it is a chamfering knife. It's suitable for chamfering and peeling, but can also be used like a standard Usuba knife. Although this knife is small, the construction is exactly the same as a regular Aritsugu knife. The back side also makes contact, and the sharpness is like a razor. This size of knife is not often found on the market, so don't miss out. There was a slight bite mark near the center of the cutting edge, but I didn't want to grind the blade more than necessary, so I stopped thinning it further when the blade was sharpened, leaving a slight mark. (There is no problem with the sharpness.) It has been mirror-polished, so some fine scratches remain. I recommend it if you don't mind. The flat and cutting edge have been polished. It is generally clean, so I think it can be used for a long time. Both the cutting edge and the flat are almost mirror-finished. I recommend it to professionals and general users alike. It has been finished with a Kitayama 8000 grit stone, a Shapton 12000 grit stone, and a natural whetstone. It is in a very sharp condition and can be used immediately. ● Size: Blade length approx. 100mm ● Blade thickness: Approx. 2.2mm at the thickest point ● Overall length: 220mm ● Weight: 59g #knife #KamagataKnife #Aritsugu #10cm