Usage Tips: Plentiful QuantityPackage include 24pcs 5 inch hook and loop sandpaper disk, 4 pieces of each sanding disc, grit: 800 1200 2000 3000 4000 5000. Different grades sandpaper from rough to fine grits to meet your different polishing need. . Premium MaterialThe sanding paper are made of high quality latex paper and silicon carbide that is durable, anti-static, good flexibility, wear resisting and prevent clogging.Uniform grit,very little dust, is good choice for grinding and polishing. . Wet Dry Sanding Disc Sanding pads 125mm can be used wet and dry without perforation. The wetting is more effective because the particles in the sanding surface are washed away to avoid clogging.This round water wet dry sanding discs can also be used for hand polished. . Easy to UseThe Hook & Loop Sanding Pad back of the sandpaper has a velcro design that can be glued onto a random orbit sander, and the velcro sandpaper is easy to install and remove,and you can sand it quickly and effectively.