Complete Types: Including 100pcs grinding discs with different grits: 40/80/120/180/320/600/800/1000/1500/2000, 10pcs of each type. Almost all polishing requirements are met High Quality: The grinding wheel is equipped with a D-class thick paper base, which is made of high-quality aluminum oxide with abrasion-resistant sand. The high-strength resin binding system increases the service life easily and conveniently; Supports Velcro for faster assembly Applicable Operation: Suitable for grinding and polishing metal, non-metal, wood, rubber, leather, plastic, stone, glass and other materials. Very convenient and you can order according to your needs Package Content: 1 x SPTA 100pcs Sanding Disc (Grit 40/80/120/180/320/400/600/800/1500/2000, 10pcs of each type)