Gator Finishing 4637 80 Grit Aluminum Oxide Sanding Sponges (1 pack), 2.5" x 5" x 1" Extra flexible for sanding contours, irregular shapes or flat surfaces For use on wood, metal, fiberglass, and painted surfaces Abrasive grit on all 4 sides Extra flexible for sanding contours, irregular shapes or flat surfaces Abrasive grit on all 4 sides