Arbor Mount Sanding Disc Vacuum Hole Design No Hole Disc Dia 5 In. Grade Medium Grit 80 Abrasive Type Closed Coat Resin Bonded Abrasive Material Ceramic Aluminum Oxide Backing Material Fiber Mounting Hole Size 7/8 In. Series FX965 Backing Weight Y Color Brown Max RPM 10 000 Package Quantity 25