C.S. Unitec EX303-005UA Center Punch, Aluminum Bronze, 3/8" x 4" Features: Copper Beryllium Only 10 different sizes available Non-sparking, non-magnetic, corrosion resistant Made from aluminum bronze
50° center punches are used to mark pieces in manufacturing or assembly. 90° prick punches are used to center the bore point and prevent tips from slipping off. The tool's butt end is designed to withstand strikes.