Feature●【Material】This diamond carving bit coated with premium diamond particles,durable and wear resistant.●【Details】Various sizes of grinding head from 0.5mm to 8mm(as picture 2). shank diameter is 2.35mm(3/32 inch)●【Widly used】Diamond bur set can grinding and carving for field stone,ceramics,glass,carbide,tile,marble,jewlry,rock etc.Perfect for carving animal eyes●【Application】Highly recommended for crafts, hobbies, home repair, jewelry,lapidary use, modeling, and so much more●【Easy to use】2.35 mm shank fit most of rotary tool includes dremel. Note: Replace the collet with the correct size (2.4mm ) when you using this productDescription