DEWALT DW1633 1-3/8-Inch Bit with 7/16-Inch Shank Bit with 7/16-Inch Shank Selfeed Bit</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Aggressive spur provides fast material penetraion</li><li>Optimized cutting geometry provides longer bit life</li><li>Open tooth design allows for more resharpenings</li><li>7/16-inch Ball groove shank for quick change applications</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/41xqvw7hTmL.jpg' noproxy></br>