3M Sanding Sponges are designed for sanding wood, paint, metal, plastic or drywall. This sponge features conventional 3M abrasives and is made with durable, flexible foam. The block shape makes it easy to hold and sands flat, contoured, or irregular surfaces. Sanding is an integral step in preparing a surface to receive a coating. For the best sanding results, sand with the grain of the surface and work through a sequence of grits, from coarse to very fine, skipping no more than one grit between each sanding step. Features: IDEAL FOR MODERATE SANDING AND SMOOTHING of joint compounds DESIGNED FOR SANDING IN CREVICES AND CORNERS - also great for sanding flat or contoured surfaces SINGLE ANGLE Conforms for easy use Rinse and reuse for longer life Made from durable foam Block shape makes it easy to hold Suitable for wet or dry sanding Can also be used to sand surfaces such as wood, metal and plastic Mineral color will not discolor the sanding surface Recommended for use with 3M Personal Safety Products Fine Grit Package contents: 4 sponges Size: 4 7/8 in x 2 7/8 in x 1 in