Universal replacement pad: 5 inch hook and loop replacement pad features 4 screw holes and 8 dust holes, fits most sander backing pads, the distance from the center to the center of the pad screw holes is about 1 to 1/4 inch, please confirm the size before purchase Suitable for 4 screw sander: Compatible with Milwaukee 51-36-7090, 51-36-7100, 6021-21, 6034-21 and Ridgid R2600 and R2601 random orbital sanders; If your sander is not the above make or model, please check if it is suitable for your sander based on this information, 5 inch diameter, 8 dust holes and 4 screw holes, especially the distance between the screw holes center to center (1- 1/4 inch) 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 several times, work well on flat sanding surfaces? age Easy assembly: the built-in mounting thread allows you to install the sander replacement pad easily and quickly, saving your time and effort to replace it Prolong the sander's life: you will receive 2 pieces of 8-hole sander hook and loop pads in the package, a sufficient quantity for your personal use and replacement, effectively extending the sander life Fits most sander backing pads: The sanding pad replacement? age is suitable for pads with the distance between the center and the center of the pad screw holes is 1 to 1/4 inches. Dust removal: The disc sander pad for use with sanders, equipped with 8 holes, which can suck the dust and debris into the dust bag. Specification: Material: rubber Size: 5 inch diameter Color: as the picture shown Package includes: 2 x 5 inch 8 hole replacement sander pad Warm notes: If your sander is not mentioned, please check the size of your sander before purchase, make sure your sander has 8 dust holes and 4 screw holes, each hole has a diameter of 5 inches and the distance between the center and the center of the pad the screw holes are 1 to 1/4 inch. This is a compatible replacement part and the manufacturers' names and part numbers have been mentioned above for reference purposes only, the items mentioned above are not brands, our brand is.