Greenlee 77U-1/2 Slug-Buster Self Centering Knockout Punch Unit for 1/2-Inch Conduit</br></br><div style="text-align:left"><b>[Product Information]</b><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>Punch unit sets include punch， die， and draw stud</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/51o5n5u58BL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31vvXsQFdjL.jpg' noproxy></br>