Pin punch, Center punch Shank:Hex Weight: 0.028kg Size(mm):S7*97 DF04013 pin punch A punch is a hard metal rod with a shaped tip at one end and a blunt butt end at the other, which is usually struck by a hammer. Punches are used to drive objects, such as nails, or to form an impression of the tip on a work piece. woodworking tools pin punch