Features:* * Made of silicon carbide and waterproof sandpaper.* The sandpapers can be used for wet and dry sanding. Electrically coated, it ensures even grain distribution.* Prevent clogging, anti-static, good flexibility, wear resistance, which provides exceptional service life and excellent finishes.* It is more effective when wet, as clogging is reduced by particles washing away from the grinding surface.* It can be used for precision grinding of mold surface, as well as in stone, varnish surface, mirror surface treatment such as polishing Waterproof sanding discs can also be used for dry sanding, it is harder than white dry sandpaper.* Plate holders for the appropriate rear pad attached to the eye socket or DA disc sander or angle grinder.* Furniture wood finishing, drywall sanding, automotive for metal polishing, almost all polish works can be finished with them. Simply choose the right sandpaper for your project.* Grit refers to the average diameter of the particles. The smaller the grain count, the coarser it is. The higher the number of grain, the finer it is. According to grit range: 800 1000 1200 1500 2000 3000 grit* Color: as pictures show* Diameter: 3 inch/75mm Package Contents: 30 pcs grinding disc (800 1000 1200 1500 2000 3000 grit,5 pieces for each grit)Note:1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.