CONVENIENT DESIGN: 5 inch 8 holes sanding discs will be aligned with your sanding machine perfectly, dustless hook & loop adhesive backing design makes grits removal & replacement quick and easy, lengthen the life of the abrasive. PREMIUM MATERIAL: Durable aluminum oxide grain of these sander disc papers produces fast cleaning and well finishing, gold stearate coating maximizes the resistance of clogging. LONG-LASTING SYSTEM: Premium resin bond system provides a great longevity for these sandpapers. PACKAGE INCLUDING: 100pcs per box, 20 pcs of each 60 80 120 150 and 240 grits sanding discs, meet your differen cleaning and polishing requirement, fit for Random Orbit Sanders. WIDELY USE: Automobile, woodworking, marine, industrial, vehicles manufacturing. The perfect gift for your father and male friends.