3M AB45100 1 1/2 Inch Hard Roloc TR Backing Pad 1/4-20 Internal Thread 7000045286

3M Roloc Disc Pad optimizes the performance of Roloc discs and bristle discs by providing the right backup system and a secure attachment for grinding applications. Plus it 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.