Coated with aluminum oxide, 3M Softback Sanding Sponge can be used wet or dry when sanding on wood, fibreglass/gel coat, marine paints, metals and plastics. 3M Softback Sanding Sponge is flexible and conformable to allow for hand sanding in areas inaccessible to machine sanders. Fine grade ranges from grade 320 to 400 grit.
Makes sanding hard-to-reach areas easy, helps eliminate finger marks and can be used wet or dry.