DEWALT DW1801 3/8-Inch Mandrel， 9/16-Inch To 1-3/16-Inch<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>DW1810 offers tool-free quick-release collar to prevent hole saws from locking to the mandrel</li><li>DW1803 and DW1805 offer spring-loaded collar that automatically engages drive pins to prevent hole saws from locking to the mandrel</li><li>All quick change mandrels feature double set screws with a recessed combination head for quick and easy centering bit changes</li><li>All quick change mandrels utillize hardened steel construction and have been tested through 15，000 plus cycles to deliver jobsite durability</li><li>DEWALT offers a full range of standard and quick change mandrels for versatility in a wide range of hole saw applications.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31wM1z3ztAL.jpg" noproxy>