Woodhaven 8500 Mortise Bit</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Carbide Tipped</li><li>1/2" Cutting Diameter</li><li>1/4" Cut Length， 2-1/4" overall length. 8500 is the most popular bit to use with our jigs. Get the 8505 (3/4" cut length) if your door frame has a 1/2" thick stop attached that the jig has to be mounted above.</li><li>5/8" Bearing， 1/4" shank.</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/31tITSJk4EL.jpg' noproxy></br>