Detailed Description: Greenlee® Slug-Buster® Round 1-1/2-Inch conduit size knockout replacement punch is used to split 1.951-Inch diameter slug. It is used as a replacement on Slug-Buster® knockout punch unit. It is designed to punch through 10 gauge mild steel, aluminum, fiberglass and plastic. Punch works using battery-power, hydraulic, ratchet or manual drivers. It is individually packaged for convenience.