DEWALT DW5586 1-3/8-Inch Diamond Drill Bit</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Bit diameter is 1-3/8-inch</li><li>Drilling length is 1/4-inch， overall length is 3-inches</li><li>Core ejection slot removes plugs for repetitious holes</li><li>Reverse spiral thread delivers continuous water feed for increased speeds and longer life</li><li>Diamond welded tip for outstanding durability and life span</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/51UHiHLIYPL.jpg' noproxy></br>