Slug-Buster® Slug-Buster® Knockout metric unit for battery-powered, hydraulic and ratchet drivers. 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 for Slug-Buster To view more info on the Greenlee site Click Here