Use the four-sided Gator sanding sponge with abrasive grit on all sides for delivering quality performance in different sanding projects. Its washability adds a longer lifespan to the sanding sponge. The wet dry sanding sponge features a wet-dry combo which allows its versatile use. It's ideal for a sand finish, and removing any water stains on wood, metal, fibreglass, and painted surfaces. The drywall sanding sponge comes with 120 grit.