High Performance Hook&Loop Sanding Discs 30pcs Waterproof Multi Grit 800 3000 Made of high quality silicon carbide and waterproof sandpaper. *The abrasive papers can be used for wet and dry sanding. *Electro coated ensures the grit distributed uniformly. Prevent clogging, anti-static, good flexibility, wear resisting, that provides outstanding life and superior finishes. *It's more effective used wet because clogging is reduced by particles washing away from the grinding for . *It can be used for mold for precise sanding, and also in stone, lacquer for , mirror for treatment such as headlamps polishing. Waterproof sanding discs can be used for dry sanding too, it's more hard than white dry sandpaper. *Disc grips to the appropriate back up pad attached to an orbital or DA disc sander or angle grinder. *Wood Furniture finishing, drywall sanding, automotive metal polishing, almost all the polish work can be finished with them. Just choosing the right sandpaper grit for your project. *Grit refers to the average particle diameter. The smaller the grit number is, the coarser it is. The larger the grit number is, the finer it is. According to the grit range: 800 1000 1200 1500 3000 grit Specifications: Material: silicon carbide Grip type: hook&loop Disc diameter: 1, 2, 3, 4, 5, 6, 7 inch (optional) Grit number: 800 1000 1200 1500 3000 grit Package Contents: 5 x 800 grit sand paper 5 x 1000 grit sand paper 5 x 1200 grit sand paper 5 x 1500 grit sand paper 5 x grit sand paper 5 x 3000 grit sand paper