3M 3 Clean Sand Hookit Backup Pad Kit

3M 3HOOKIT CLEAN SANDING BACKUP PADDust extraction Hookit back up pad (Clean Sanding) is constructed on foam material. The backup pad itself has a 5/16-24 internal thread, and the kit includes five adapters that convert it to 1/4-20 external threads, 1/4-20 internal threads, 1/4-28 external threads, 5/16-24 external threads, or 6mm-1.0 external threads. Product is sold by the kit.