Gator, 3 pack, 6", 100 grit aluminum oxide sanding discs, made of heavy duty sandpaper, resin bonded for power tool sanding & resists heat & humidity for longer life, use on wood, metal, drywall, fiberglass & painted surfaces, fits 6" backer pads & 6" stationary belt/disc sanders, stick on adhesive holds securely without slipping so you can smooth large surfaces, anti-clog stearate coating reduces particle build up, keeping the high performance grain exposed longer, grain exposed longer.