Diablo 5-In. 40 Grit ROS Hook & Lock Sanding Discs, 50-Pack are designed for fast leveling, shaping, heavy material removal, and stripping tasks. Crafted with a premium ceramic grain blend, these sanding discs provide rapid material removal and extended sanding life. They feature a 12-hole universal hole pattern for quick and easy alignment, compatible with all 5 and 8 hole sanders. The hook and lock backing ensures a secure and consistent connection, making disc changes simple. With Clog-SHIELD technology, these discs resist pitch build-up and clogging, while ENDURA-BOND grit-to-backing bond enhances durability. I for use with orbital and DA sanders on wood, metal, and plastics. Model Number: DCD050040H50G