Gator 4347 Sanding Disc, 5 in Dia, 40 Grit, Extra Coarse, Aluminum Oxide Abrasive, VentedGator 5 in random orbit sanding discs provide great finishing results and good value. These red resin discs are specifically designed for power tool use as they resist heat build up and humidity for longer life. The quick change hook and loop holding system allows for easier and faster disc changing. The eight hole vented pattern takes full advantage of the sander's dust collection systems keeping your work area cleaner. Unit: PK 50 UPC: 082354043476