Superior Pads and Abrasives RSP37 - 6" Dia 6 Vacuum Holes with 5/16"-24 Threaded Shaft Hook & Loop Sander Pad Replaces OEM# 18001. This pad features a high-quality, durable design. Designed to Compatible with 7336 Random Orbit Sander, this pad features efficient, 6-hole dust collection. Installation is quick and easy with the built-in mounting thread. This 6-inch diameter pad accommodates 6" hook and loop discs. Note: For use with 6" discs. 5/16"-24 thread shaft diameter maximum 10,000 RPM