Gator 7312 Sanding Sponge, Aluminum Oxide | Gator drywall sanding sponges are the economical way to prep & finish your drywall projects. From sanding patched areas, to scuffing before repainting, these four-sided sponges will get the job done. These sponges are not just for drywall, they are also ideal for small sanding of wood, metal, fiberglass and painted surfaces.