3M 7485 3-Inch Roloc Coarse Surface Conditioning Disc MAX RPM 18，000 ，25 Discs<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Available from tough grinding to fine finishing</li><li>Provides the convenience of a twist-lock and positive centering device</li><li>Measures 3 inches</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51b4X%2BwjQlL.jpg" noproxy>