The Tekton 5-Piece Center Punch Set marks workpieces with dimples, creating exact starting spots for drills that prevent them from wandering. Made from premium, high carbon steel, these punches are able to mark most materials including cast iron, mild steel, brass, bronze, copper, aluminum, wood, plastics, and polymers—anything that's softer than the tip itself. This set contains 1/4, 5/16, 3/8, 7/16, and 1/2 inch center punches. Made in USA.