Our 3M™ Paint Defect Removal Abrasive Rectangle Sheet is a small, durable abrasive for removing paint nibs and other defects by hand, without having to sand, compound and polish entire panels. Featuring fast-cutting, long-lasting aluminum oxide abrasive, the thin film-backed 37 mm x 28 mm rectangle fits onto specially-designed sanding blocks and pads for powerful hand sanding at your fingertips.