Gator 5-Pack 5" 220 Grit 8 Hole Aluminum Oxide Red Resin Sanding Discs are designed for power tools and can be used on wood, metal, drywall, fiberglass, and painted surfaces. They have a quick change hook and loop holding system that allows for faster disc changes. The resin is bonded to resist heat and humidity for longer life. These discs fit Skil, Bosch, B & D, DeWalt, Makita, and Milwaukee random orbit sanders. The vented hole pattern matches the sander's pad for maximum dust extraction.