10 pcs Solid Wheels Great addition to your hobby craft tool kit. Diamond coating is on both sides of the disc. With high hardness and wear resistance and excellent impact resistance.Suitable for use in carpentry and crafts.Main purpose: Stone / Jade / ceramic / glass / Carbide / cutting / grinding / engraving.Diamond Discs (Slitters) work great for Cutting, Slicing, & Contouring a variety of materials including Gems, Stone, Glass, Tile, Composites, Porcelain, Ceramic, Metal, and Various other materials.These discs are double sided and come in both rim cut and full coat styles.Diamond Discs (Slitters) work great for Cutting, Slicing, & Contouring a variety of materials including Gems, Stone, Glass, Tile, Composites, Porcelain, Ceramic, Metal, and Various other materials.These discs are double sided and come in both rim cut and full coat styles.