Universal replacement pad: 5 inch hook and loop replacement pad features 4 screw holes and 8 dust holes, fits most sander backing pads. Center to center distance of pad screw holes is approximately 1-1/4 inch; please confirm dimensions before purchase. Suitable for 4 screw sanders: 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 listed, verify compatibility based on 5 inch diameter, 8 dust holes, 4 screw holes, and 1-1/4 inch center to center screw hole distance. Quality material: these disc sander pads are made from rubber with smooth surfaces, durable and resistant to cracking, designed for long-term and repeated use on flat sanding surfaces. Easy assembly: built-in mounting thread allows for quick and secure installation, saving time and effort during replacement. Extend the life of the sander: package includes 2 pieces of 8-hole hook and loop sander pads, providing sufficient quantity for personal use and future replacements. Fits most sander backing pads with 1-1/4 inch center to center screw hole distance. Dust collection: the 8-hole design helps channel dust and debris into the dust bag for improved cleanliness during operation.