Arbor Mount Sanding Disc Vacuum Hole Design No Hole Disc Dia 5 In. Grade Fine Grit 120 Abrasive Type Closed Coat Resin Bonded Abrasive Material Aluminum Oxide Backing Material Fiber Mounting Hole Size 7/8 In. Series FX370 Backing Weight Y Color Brown Max RPM 10 000 Package Quantity 25