3M 99433 Sanding Sheet, 11-1/4 in L, 4-3/16 in W, 80 Grit, Medium, Aluminum Oxide Abrasive

3M Pro-Pak™ Drywall, plaster sanding sheets are designed for sanding drywall joint compounds (light or regular), patching compounds and plaster. It is made with aluminum oxide, a tough synthetic mineral that cuts cleanly and leaves a smooth finish.