MEETING EVERYTHING YOU NEED - 10 Pcs 40 Grit Serrated Discs - Optimum the ultimate for your angle grinder Application: The grinding wheel flap disc can be used for universal applications, ranging from metal or woodworking, grinding or finishing concrete, smoothing or finishing stone, rust treatment, etc. Cleaning weld seams, deburring, chamfering, defrosting, preparatory work for lacquering of car bodies, machinery, switchboards, tank constructions, sanding of wooden surfaces, such as parquet floors EXCELLENT PERFORMANCE - Each 5 in x 7/8 in flap disc is compatible with angle grinders that can operate up to 13,300 RPM. fiberglass, plastics, wood and other uneven surfaces. Advantage: The grinding wheel has a long service life. Safe and efficient. Durable material. Fast polishing, high abrasion resistance. The grinding wheel is designed for zirconia alumina material and features high toughness, fine crystal size and good wear resistance. It has a durable fiberglass backing, which