3M™ Stikit™ Abrasive Disc Back-up Pads perform across a large variety of auto body sanding jobs from low-speed polishing and grinding to shaping plastic filler. Durable foam construction and tapered edges maximize performance with 6- or 8-inch dia. 3M™ Stikit™ Abrasive Discs (sold separately). Pads work as part of the 3M™ Stikit™ system for fast disc changes, optimizing time and disc life.