Multiple Grit Sanding Discs-----80pcs per box, 8 different grit sandpaper assortment, from rough to fine, 10x40/60/80/120/180/240/320/400 hook and loop sanding discs, to give you more choices if needed. 125mm diameter 8 holes mixed grit, ideal for all 5 inch sanders. High Quality-----High quality alumina sanding discs, made of alumina abrasive, with special heat treatment, provide excellent polishing, sharpness and wear resistance. Durable and anti-static, good choice for sanding and polishing. 8 holes are designed for efficient dust extraction. Easy to Use-----easy and quick to stick, strong and durable, will not fall off when installed in progress in use, easy to install and remove. Widely used-----Mainly used in wood, plastic, stone, glass and other materials grinding, polishing, etc., metal and non-metal materials of various complex profiles for rust removal, paint stripping, deburring, welding point grinding. Sand-----Resin bond system provides smooth finish and superior grain