Unique punch profile splits sheet metal scraps for easy removal Knurled edge for better grip Laser markings for quick part identification Alignment marks for improved accuracy Punch and die made in the USA Replaces 60246 Features Type: Sheet Metal Punch Set Application: Use with a KRW-1 ratchet. Dimensions: 1/2 in. (0.89 in. or 22.5 mm) conduit Shape: Round Thickness: Punches 10 gauge mild steel Material: For use in mild steel, brass, copper, aluminum, fiberglass, and plastic Capacity: Optimized for use in mild steel.