30pcs Diamond Drill Bits Rotary Burrs Diamond Tips Diamond Sanding Diamond Grinding Drill Bits Diamond Grinding Needle Electric Grinding Accessories For Dremel Rotary Drill Bit

General DescriptionThis 30 piece rotary diamond drill bit set is designed for grinding and polishing various materials such as jade, stone, ceramic, glass, carbide and tungsten steel. Made from high quality tungsten steel, these tools offer high hardness, wear resistance and excellent toughness.Technical specificationsShank diameter: 3 mm (1/8 inch)Total length: 45 mm (1.77 inch)Compatibility and accessoriesCompatible with most rotary tools and mini grindersOther informationCarefully packaged in a pretty box for easy storage