Silicone Carbide Drywall Sanding Sheets: Delivers fast, excellent results when sanding drywall joints and patching compound. Coated with sharp silicon carbide abrasive and is water resistant, rinsable and reusable. Drywall sheets are resin bonded to D-wt paper for durability and longevity and made to fit most drywall and sanding tools. 100 Grit. 4-3/16 x 11″. 5pk.