3M DSMC-F Sanding Sponge, 2-7/8 in L, 4-7/8 in W, Coarse, Medium, Aluminum Oxide Abrasive

3M Large area sanding sponge is ideal for either dry or wet sanding of wood, paint, metal, plastic and drywall. When finished simply rinse and reuse. Two grades on one sponge, medium/coarse.