Two separate components make up this 5" diameter buffing system. A Holder Pad and a Buffing Pad. Though the Holder pad is rated at 12,000 maximum RPM, the Buffing Pad is rated at 10,000 RPM. The Holder Pad fits 5/8" grinder/buffer arbors. Holder Pads and Buffing Pads are sold separately from the options below.