Diablo 3 x 21-In. 50-Grit Sanding Belts, 2-Pack are for heavy stock and paint removal as well as surface leveling. Crafted with a premium zirconium grain blend, these sanding belts provide fast material removal and a long sanding life. They include Clog-SHIELD technology, which reduces pitch build-up and clogging through a special blend of grinding agents. The ENDURA-BOND backing ensures grain bonding and durability thanks to its high-strength resin construction. These belts are designed for use with sanders on wood, metal, and plastics, making them versatile and reliable for various sanding tasks. Model Number: DCB321050S02G