Greenlee 304AVBB Slug-Buster Self Centering Knockout Draw Stud， for 1-1/2-Inch Conduit Punches<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Self-centering punch aligns itself on pilot hole</li><li>No need to draw crosshairs or line up die alignment marks</li><li>Unique punch also splits slugs for easier slug removal</li><li>Use with battery-powered， hydraulic， ratchet or manual drivers</li><li>Draw studs must have matching Punch and die to operate</li></ul></div><img src="http://ecx.images-amazon.com/images/I/318tCYR-7VL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31vvXsQFdjL.jpg" noproxy>