Gator, 5 Pack, 5", 5 Hole, 220 Grit, Aluminum Oxide, Red Resin, Sanding Discs, Designed Specifically For Power Tools, For Use On Wood, Metal, Drywall, Fiberglass & Painted Surfaces, Quick Change Hook & Loop Holding System Allows Faster Disc Changes, Fits Porter Cable Random Orbit Sanders, Resin Bonded To Resist Heat & Humidity For Longer Life, Vented Hole Pattern Matches Sanders Pad For Maximum Dust Extraction.