Make sure this fitsby entering your model number. Manual drive knockout punches, for use with ratchet, wrench, or electric driver. Conduit punch sizes: 1/2″,3/4″,1″,1-1/4″ Capacity: Mild steel plate up through 3.5mm (10 gauge) Works to punch mild steel, Aluminum, Fiberglass and plastic. Slug splitting design on punches allows for easier slug removal â€“ the smooth operation leaves the round hole with clean edges and a uniform size. Manual punch works for use in tight areas. Kit comes in a rugged storage case. Storage case is designed with a secure-closing lid for keeping all the pieces neatly organized for easy transport. Draw Stud threads are compatible with THA001 and THA013 draw studs, allowing for use on TEMCo hydraulic drivers TH0004 and TH0037 or equivalent.