Diablo Hook & Lock 5-In. 60-Grit ROS Sanding Discs, 4-Pack are for leveling surfaces and removing heavy stock or paint efficiently. Crafted from a premium ceramic grain blend, these discs deliver fast material removal while ensuring a long sanding life. Featuring Clog-SHIELD technology, they reduce pitch build-up and clogging through a unique blend of grinding agents. The Hook & Lock backing s a secure connection that can be attached and removed repeatedly without losing strength. Designed with a universal hole pattern, these sanding discs fit all 5 and 8 hole sanders, making them versatile and convenient for various sanding tasks. Model Number: DCD050060H04G