Common uses for the Dremel sanding disc include smoothing and shaping wood or removing paint. Dremel sanding discs have a finer grit than Dremel sanding bands and because they mount on a Dremel 402 mandrel, they provide a flexible surface that allows sanding in contoured and hard-to-reach areas. Sanding discs work well on fiberglass and in removing rust from metal surfaces. Medium 220 grit sanding discsFor rough shaping and smoothing wood and fiberglassAlso great for removing rust from metal surfacesFor use with mandrel model No. 402