The 3M™ Hookit™ Low Profile Abrasive Disc Back-up Pad is designed specifically for better leveling and faster material removal during flat auto body sanding. Its low profile and medium density foam construction afford excellent control, and its 15-degree blunt tapered edge holds up under tough conditions. Specially designed for use with 3M™ Hookit™ Abrasive Discs for fast change-outs.