Universal Replacement Pad: The 4.7 inch hook and loop replacement pad features 4 screw holes and 8 dust holes, fits most sander backing pads. Distance between center and the center of pad screw holes is about 1-1/4 inch. Please confirm the size before purchase. Suitable for sander with 4 screws: If your sander is not the above brand or model, please check if it fits your sander based on this information—4.7 inch in diameter, 8 dust holes, and 4 screw holes—especially the distance between the screws (center-to-center holes: 1-1/4 inches). Quality material: These disc sander pads are made from rubber with smooth surfaces, not easy to break, which can be applied for a long time and many times. Works well on sanding flat surfaces. Easy assembly: Built-in mounting thread allows you to install the sander replacement pad easily and quickly, saving time and effort during replacement. Extend the life of the sander: You will receive 2 pieces of 8-hole sander hook and loop pads in the package, sufficient quantity for personal use and replacement, effectively extending the life of the sander.