Greenlee 7211EBB-18.6

Slug-BusterВ® Knockout Punch Unit Includes Punch, Die and Draw Stud for .732" (18.6 mm) Actual Hole Size. The contractor's choice - worldwide. Unique punch profile also splits slugs for easier slug removal. Use with battery-powered, hydraulic, ratchet or manual drivers. Uses standard Greenlee dies and draw studs. Slug Buster punches available in sizes up thru 2.52" (64.0 mm). U.S.Patent #4,543,722