We offer a wide range of standard 9" x 11" sheets with waterproof backings for hand sanding. Highly flexible backings and Dri-lube non-loading coatings are also available. Choose from top-quality sheets or economical sheets. Aluminum oxide provides a 30 to 50% faster cut rate, and silicone carbide is an excellent choice for a sharp cut and a consistent finish. Sheets are also available in natural garnet.