3M™ Roloc™ Disc Pad is a medium-density rubber pad designed to provide firm support for 2 in (51 mm) diameter 3M™ Roloc™ Abrasive Discs, TS/TSM. Conveniently mounts directly to tools with a 1/4-20 in external threaded shaft.3M Roloc Disc Pad optimizes the performance of 3M Roloc Discs and 3M Roloc Bristle Discs by providing the right backup system and a secure attachment for grinding applications. It also saves time by eliminating the need to align edges of the disc with the disc pad, the screw aligns the disc, making disc changes quick and easy.