5 Inch backing pad with 8 holes for dust extraction and 4 screw attachment holes, made with a high quality dense rubber and strong hook and loop attachment face, making this pad a perfect replacement for your machine. Product Information Diameter: 125mm (5 Inches) No. of Extraction Holes: 8 No. of Screw Attachment Holes: 4 Face Attachment: Hook and Loop (Velcro) Ready to send out from the United Kingdom Compatible Machines Milwaukee: 6021-21 (SER B19A) // 5-Inch Random Orbital Palm Sander Ryobi: RS240, RS241, RS280, RS2418, RS280VS Ridgid: R2600, R2601 This pad will fit other branded machines with the same screw attachment type.