Leathercraft Tools - Diamond Hole Punch Three-pronged, 3mm This is a tool from when my family member was doing leathercraft as a hobby. Based on the shape of the blade, it appears to be a diamond hole punch, but I am not familiar with leathercraft or its tools at all, so I would appreciate it if you could judge from the photos. It is quite old and has been stored at home for a long time, but I am listing it in case anyone is interested. There are scratches and rust, and there are markings (in two places) on the handle. Thank you. #Leathercraft #LeathercraftTools #LeathercraftPunch #DiamondHolePunch