These 9"x11" Sanding Paper Sheets are made with silicon carbide grains and electro-coated for superior adhesion and uniform grit distribution. Their waterproof backing makes them perfect for wet or dry sanding, reducing clogging and enhancing the finish on delicate surfaces. Commonly used in woodworking, automotive, metal polishing, plastic shaping, and surface prep, these sheets offer professional-grade performance and long-lasting use.