Gator® Multi-Purpose 1/3 Sheet Clamp-On Sandpaper Precut Sheets fit 1/3 Sheet Orbital Sander. The heavy duty resin sandpaper resists heat and tearing for longer life. Ideal for use on wood, metal, drywall, fiberglass, or painted surfaces. 6 Pack Size: 3-2/3" x 9" Backing Type: Paper Grain: Aluminum Oxide Grit: 60 Grit