Provides a broad dent in marking intersecting center lines, hole locations and pilot drill starting point. Black oxide finish to help prevent rust corrosion; extending tool life and performance. Modified parabolic striking end to help reduce mushrooming and chipping. One-piece design for strength and durability. Center Punch Wikipedia Proto 1/2″ Center Punch Center Punch Tool J2 Stanley Proto | Stanley Proto 12-Piece Punch Set, Pin Punch, 1/4 u2192 7... Proto 1/2" Center Punch J411/2S2 ; Delivery. Free 2-4 day delivery. Sat, Nov 15 - Tue, Nov 18. From Ogden, Utah, United States ; Returns. Accepted within 30 days Modified parabolic striking end to help reduce mushrooming and chipping Proto Chisel Cold Flat S2 Steel 1W X 7/8 Hex Shank 8L Black 86A7/8X8 Made from S2 steel and specially heat-treated for greater strength and durability Black oxide finish to help prevent rust corrosion; extending tool life and performance