Diablo 5-In. 180 Grit ROS Hook & Lock Sanding Discs, 50-Pack are for removing minor imions and performing initial sanding between paint or stain coats. Crafted from a premium ceramic grain blend, these discs enable fast material removal and a long sanding life. The hook and lock backing system ensures a secure yet easily removable connection, making disc changes quick and hassle-. Featuring Clog-SHIELD technology, these discs resist pitch build-up and clogging, while ENDURA-BOND provides a durable grit-to-backing bond for extended use. Designed for orbital and DA sanders, they work effectively on wood, metal, and plastics, making them versatile for various sanding projects. Model Number: DCD050180H50G