3X 5 & 8 Hole Universal Vacuum Abrasive Fiber Disc, Fiber Backing, Hook & Loop, Aluminum Oxide, 5″ Diameter, Grit P120. Load-resistant stearate coating, fiber-reinforced backing, and aluminum oxide combine to give 3X the performance of typical aluminum oxide paper discs. Universal vacuum holes allow the discs to be used on 5- or 8-hole vacuum sanders. Hook and loop fastener is easy to use and makes disc changes fast. P-graded aluminum oxide abrasive is tough and offers a very consistent scratch pattern for the best finish. This disc is used with a molded rubber or foam back-up pad (sold separately). For moderate removal and leveling of surface imperfections. (Pack of 10)