Professional punches for commercial or occasional use Hollow punch set Suitable for all kinds of leather works and belts as well as vinyl and gasket material Suitable for making clean accurate holes in gaskets Provides uniform cutting on a wide variety of materials Manufactured from heat treated carbon steel for strength and durability Knurled body for a secure grip Precision ground flutes and cutting edges Really sharp point ideal for cutting effectively with minimal effort Imperial hollow punch set SET INCLUDES THE FOLLOWING SIZES • 1/8", 5/32", 3/16", 7/32", 1/4" and 5/16"