4 Pack, 5, No Hole, 40 Grit, Adhesive Back, Random Orbital, Discs, Stick Sand, Durable, Sharp, Aluminum Oxide Abrasive, NonPigmented, Water Based Stearate AntiClog Coating, Pressure Sensitive Adhesive, Aggressive, Cool Cut, Resists Loading, Won’t Contaminate Finish, Allows For Quick Easy Disc Change