Gator 3-Pack 6" X/Coarse 40 Grit Sanding Disc is a stick-on sanding disc that is suitable for sanding drywall, fiberglass, metal, and wood. It has a pressure-sensitive adhesive backing and a resin bond. Gator Stick-on sanding discs are designed to tackle any sanding challenge. Offered in the most popular sizes to fit portable disc or stationary sanders, you will find the right size for your tool. The wide grit range takes you from start to finish.