Superior Pads and Abrasives RSP33 - 5 inch diameter - 5/16 Inch-24 UNF threaded shaft hook and loop sander pad with 5 vacuum holes replaces Porter cable 15000. Your sanding jobs Will be quicker and smoother than ever before. Designed to fit the Porter cable 7335 random orbit sanders, this pad features the convenience of five-hole dust Collection and accommodation for five-hole hook-and-loop discs, allowing for speedy changing of the discs. With a built-in mounting thread 5/16 Inch-24 UNF, installation is more efficient than ever Simply mount the pad using the screws from your sander. This part is compatible with - Porter cable: 7335 type 1, Type 2. For use with 6" Discs. 5/16"-24 Thread shaft diameter Maximum 10, 000 RPM. Specifications: diameter: 5" | vacuum holes: 5 | Type: hook & loop | Threaded shaft: 5/16"-24 UNF