This super-fine grade sanding sponge features an aluminum oxide, 500-600 grit face with foam backing. Provides flexibility and conformability to allow for sanding by hand in areas inaccessible to machine sanders. Use wet or dry when sanding on wood, fiberglass/gelcoat, marine paints, metals and plastics. Sponge measures 4 1/2" x 5 1/2". Box of 20.
