Diablo Hook & Lock 5-In. ROS 150-Grit Sanding Discs, 15-Pack are for removing minor imions and performing initial sanding between paint or stain coats. Crafted from a premium ceramic blend, these sanding discs fast material removal and a long sanding life. They feature a 12-hole universal hole pattern, making them compatible with all 5 and 8 hole sanders for quick and easy alignment. The hook and lock backing ensures a consistent, secure connection for effortless attachment and removal. These discs are designed with Clog-SHIELD™ technology to reduce pitch build-up and clogging, extending the life of your sanding discs. Additionally, the ENDURA-BOND™ grit-to-backing bond enhances durability. Suitable for use with orbital and dual action sanders, they work effectively on wood, metal, and plastics. Model Number: DCD050150H15G