This handy and versatile hole punch kit made by C.S. Osberne in USA contains a threaded handle with self-centering pointed plunger. The threaded handle will acommodate nine inter-changeable threaded cutting tubes. The punches in this set will cleanly cut leather, rubber, paper, plastics and other soft materials. The self-centering point makes these punches ideal for cutting concentric washers in small quantities by hand. All cutting edges are properly hardened. The only professional tool like it. Comes in a sturdy plastic box for storage.
Hole size diameters of the punches in inches are 1/4", 5/16", 3/8", 7/16", 1/2", 5/8", 3/4", 7/8" & 1"
When cutting material, a hardwood block, poly cutting board or poundo board will make the cutting edges last a long time. A wooden hammer or rawhide hammer is recommended to use with this self-centering hole punch tool set.