Gator, 5 pack, 4.5" x 4.5", 60 grit, aluminum oxide, sanding sheets, stick on premium sheets designed to fit any 1/4 sheet stick on palm sander, heavy duty resin sandpaper resists heat & humidity for longer life, pressure sensitive holding system holds securely without slipping, tearing, or wrinkling allowing 100 percent use of the sanders motion, for use on wood, metal, drywall, fiberglass & painted surfaces, resin bonded to resist heat & humidity for longer life.