- Compatibility: This replacement pad is designed to fit various models, including RS290, RS241, RS240, RS280/RS280VS, RS281VS, P411, 6021-21, and 6034-21, as well as random orbit sanders with model numbers 315.112170, 315.116940, 315.116950, 315.112180, and 315.279870. - Enhanced Durability: The upgraded design features a thickened and more durable backing, superior cushion rubber, and a denser hook than the original pad, ensuring longer-lasting performance. - Fit Verification: If your sander model is not listed, confirm compatibility by checking the following specifications: 5-inch diameter, 8 dust holes, and 4 screw holes. The distance between the centers of the two screw holes is 1-1/8 inches. Please note that screws and washers are not included. - Simple Installation: The built-in mounting thread allows for quick and straightforward installation, enhancing the grip of abrasive paper for more efficient sanding. - Practical Applications: Ideal for woodworking projects, home renovations, and furniture refinishing, this pad ensures smooth and effective sanding for a professional finish. Perfect for both DIY enthusiasts and professionals looking to upgrade their sanding tools.