Greenlee 730-1/2 1/2 Hole Size Standard Round Knockout Punch Unit

Using the Greenlee 730-1/2 is easy. First, assemble the punch unit with the punch, die, and draw stud. If you're using a battery - powered, hydraulic, or ratchet driver, you don't need to worry about the draw stud as it's part of the driver kit. Then, find a suitable pilot hole and assemble the unit through it. Once assembled, use your chosen driver to start punching. You can use this punch unit on mild steel, aluminum, fiberglass, and plastic. Just make sure the mild steel is up to 10 gauge (3.5 mm) thick. When it comes to maintenance, keep the punch and die clean after each use. You can use a clean cloth to wipe off any debris. Store the unit in a dry place to prevent rusting. And always follow the safety instructions of your driver when operating the punch unit.