The Osborne arch punch is drop forged in one piece from the finest special carbon steel. This 7/16 inch diameter size round hole punch is made in USA. A unique feature of the Osborne arch punch is the inside taper which permits the punching to clear easily through the barrel. Punches have fully polished barrels. The cutting edge is fully hardened all the way through and superbly finished providing long use trouble free punching. There is no other Hollow punch that can compare. This hole cutter tool is designed for leatherworking, upholstery, and fabric fabrication to cut perfect round holes in leather, canvas, vinyl, and rubber. The leatherwork tool meets government standards.