Compatible with models: DW420/K, DW421/K, DW422/K, DW423/K, DW426/K, D26450, D26451/K, D26453/K, D26456, BO5010/K, BO5030/K, BO5031/K, BO5041/K. Replacement for part numbers: 743081-8, 743051-7, 151281-08, DW4388. Hook and loop backing pad allows for quick abrasive paper changes. Easy screw-on installation. Attaches securely and conveniently. Note: Screws are not included. Use existing screws from your sander. Product dimensions: 5-inch diameter, 8 dust extraction holes, 3 screw holes. Distance between screw holes: 1-7/16 inches. Screw hole diameter: 9/32 inches. Features 8 holes for efficient dust extraction when used with sanders equipped with dust collection systems. Made with premium rubber to reduce vibration for improved performance. High-density, uniform hook surface provides strong adhesion. Reinforced backing is thicker and more durable compared to standard pads. Color: Blue and black. Material: Polyurethane. Package includes: 2 x Sander backing pads. No other items included. Note: Lighting and monitor settings may cause slight color variations between the image and the actual product. Measurement tolerance: +/- 1-3 cm.