These Makita Drywall Sanding Discs suit the Makita DSL800ZU Drywall Sander, with a 9-hole design that makes it suitable for most drywall sanding machines. Features high-quality ceramic grain abrasive for increased durability and sharpness. The special coating prevents clogging and provides strong backing with the heavyweight paper. The heavyweight paper provides strong backing and reduces edge tear-out for more sanding.