Usage Tips:[COMPATIBLE MODELS]1. for dewalt orbital sander replacement pad Designed to fit on . 2. Sanding Disc Backing Pads Compatible with: DWE6423/6423K, DWE6421/6421K, DWE6421-B2, DWE6421-B3, DWE6421-BR, DCW210B. Direct replacement for DWE64233 & N329079. [EASY INSTALLATION]Sanding Disc Backing Pads Build-in 4 mounting screw holes for quick and easy installation, and for increased abrasive paper grip. NOTICE: The screws are not included, You can use the existing screws on your sander. [DURABLE SANDING RUBBER PADS]5 inch orbital sander pads, High-Quality The soft rubber can reduce vibration from orbital sander for better work, finish to your project. for added convenience, this sander pad allows for switching between grits. [EFFICIENT DUST COLLECTION]This 5 inchs 8 Hole design sander pads, that vacuum up the dust and debris into dust bag assembly. Ultra-convenient dust collection feature. [BUY WITH CONFIDENCE]Thank you very much for your great support. Product quality and customer satisfaction is our top priority. If you have any questions please contact us, we will provide the best service as we can.