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Knockout Punch Tool Kits
Knockout tool kits include a ratchet or manual-hydraulic driver, punches, dies, and one or more draw studs to create round holes in sheet metal and other thin, flat materials. Their draw stud pulls a sharp-edged punch from one side of the sheet metal toward the die on the other side to cut a clean, accurate hole. Also called panel punches, they are commonly used to make openings for conduit and wiring in electrical boxes and panels.