Diablo Hook & Lock 5-In. ROS 220-Grit Sanding Discs, 15-Pack are for final sanding and surface preparation before staining or varnishing. Crafted from a premium ceramic blend, these sanding discs fast material removal and extended sanding life. They feature a 12-hole universal hole pattern that fits all 5 and 8 hole sanders, ensuring quick and easy alignment. The hook and lock backing allows for secure attachment and effortless removal, providing consistent performance. With Clog-SHIELD™ technology, pitch build-up and clogging are reduced, while ENDURA-BOND™ ensures a durable grit-to-backing bond. These discs are suitable for use with orbital and dual action sanders on wood, metal, and plastics. Model Number: DCD050220H15G