Greenlee 29451 Slug-Splitter Knockout Draw Stud for Hydraulic Drivers， 7/16 by 4-1/2-Inch<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>For use in Greenlee Hydraulic Drivers 7804 and 7904</li><li>Punch and die are required for operation</li><li>Slug-Splitter SC heavy-duty punches are designed to punch up through 10 gauge (3.5 mm) stainless steel</li><li>Self-centering punch aligns itself on pilot hole</li><li>Unique punch profile also splits slugs for easier slug removal</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31fsNV8hq8L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31vvXsQFdjL.jpg" noproxy>