General description Ideal for cutting gemstones, glass, porcelain, tiles, carbide, ceramic, aluminum, and copper, this Stone Carving Set Diamond Burrs is perfect for crafts, hobbies, home repairs, gemstone use, and modeling. Technical specifications Quantity: 120 diamond mounted grinding burrs Shank diameter: 3 mm (1/8 inch) Material: diamond Measurement allowed error: +/- 1-3 cm Compatibility and accessories Compatible with most rotary tools or die grinders Other information Note: Light reflection and different displays may cause the color of the item to differ slightly from the real thing.