During construction or installation work is sometimes necessary to drill a hole in the metal. In contact with the surface of the drill bit can slide along the metal. As a result, the position of the drill bit can vary and can be accidentally drilled a hole in the wrong place, where it was needed. In such cases, the aid comes the punch. With it you can make a small mark (indentations) in the metal, so that during drilling the drill from sliding on the surface, and it was clearly recorded in the right meste.Konstruktsiya automatic kerneraNakernivatel automatic YT-47161 consists of a metal base with rubberized grip for comfort. Inside the base is a striker spring, which moves as a result of pressing directly to the trigger mechanism, which produces a mark on the surface.