3M Medium Grade Full Size Sanding Sponge is ideal for sanding of wood, paint, metal, plastic and drywall. When finished, simply rinse and reuse. Comfortable, flexible and convenient. Features: Use wet or dry Great for all purpose sanding Washable and reusable Includes 3 sanding sponges For the best results, sand with the grain of the surface and work through a sequence of grits, from coarse to very fine, skipping no more than 1 grit between each sanding step (other grits not included) Size: 4-1/2 in. x 2-5/8 in. x 1 in. Simple to use Designed to produce quality smooth finishes