These unique discs from 3M are a new type of abrasive that is superior to sandpaper, flap wheels, or other types of sanders, brushes, or abrasive wheels. Their flexible bristles can reach into areas with detail and irregular, curved, or flat surfaces. Woodcarvers will appreciate how well they remove the "fuzzies" without harming any of the underlying detail. Coarser grits can be used to carve, grind and texture while finer grits will smooth, burnish and polish. The 3M Cubitron and aluminum oxide grains embedded throughout the plastic bristles make them very long lasting.