Detailed Product Description 1. Diamond disc for dental lab 2. Raw material: diamond power and stainless steel 3. Diameter: 19mm, 22mm and 30mm 4. Thickness: 0.15mm, 0.2mm, 0.3mm, 0.4mm and 0.5mm 5. Width of diamond coated: 3mm, 5mm and 7mm 6. Shank: HP 7. Package: 5pcs packed in a transparent plastic bag