The Vim P79 is a hollow punch set for making gaskets and punching holes in various materials. Features: * Used for punching round holes in paper, fiber, cloth, rubber, leather and other gasket materials. * The set consists of seven hole punches from 1/4" to 5/8" and a drive mandrel. * Made from alloy steel and heat-treated. * Place material to be punched on a wooden surface, and tap mandrel. * Do not use on metal surfaces. Includes: * 1/4, 5/16 3/8, 7/16, 1/2, 9/16 and 5/8 inch punches and mandrel in metal tray.