And the combination of flexible foam backing material and abrasive grit adhesion ... clear coat sanding) the sponge grades are equivalent to 120-180 (medium) all the way up to 800-1000 (ultra ...

If most of the texture and grit is gone, it will no longer be effective and should be thrown out. While cleaning and reusing ...

a package of 150-grit drywall sanding paper that's precut to fit your sander, and a sanding sponge for corners and detail sanding. You'll also need a double-strap dust mask rated for nuisance dust ...