Greenlee 7906SB knockout punch set creates clean, round holes from 1/2 in to 2 in in metal surfaces, streamlining knockout work for electrical installations. This kit provides the full size range in a single set, suitable for punching through panels, boxes, and other metal enclosures. Made by Greenlee, the 7906SB is a dedicated knockout punching solution designed for consistent hole sizing across the 1/2"–2" range.
