Gyuto knife, blade length 17.4cm, 114g. The spine is about 1.8mm thick near the top of the heel. This is an older model from Masahiro, a top manufacturer in Seki. It's a double-edged stainless steel knife. Masahiro has been jointly developing stainless steel with Daido Steel Co., Ltd. for a long time, and this product also seems to be supplied by Daido Steel, as it has a star-shaped mark. The material is quite hard. Both the blade and the handle show some signs of wear, but there are no gaps, and it seems like it can still be used for a while. I sharpened it thoroughly, put an edge on it, and polished it. Please see my profile for the detailed restoration process.