5pcs Diamond Coated Cylindrical Grinding Bit 4.0/4.8/5.5mm For Lapidary Carve Features: Sturdy and durable material: made of quality emery grain, effective grinding effect, fine and even, fine carving, hard texture, durable to serve you for long time. Chainsaw sanding head: can be applied instead of a file, so that your chain will be pointed as before, the chain does not need to be removed when working. Wide application: used for sculpturing, dressing, precision grinding and internal grinding carbide in ceramic, glass, stone, alloy and many other abrasive materials. An essential tool for professional groomers and pet-owners alike to achieve perfectly smooth nails. Total length: 30mm/ 1.18in; Material: Metal, Diamond. Package Includes: 5x Diamond Mounted Point (3 Choices 1 / 2 / 3 ) Specifications: Color : Golden Total Length : approx. 30mm/ 1.18in Net Weight : 10g / 0.02pounds Type 1 Size Diameter : approx. 4mm/ 0.16 in Type 2 Size Diameter : approx. 4.8mm/ 0.19 in Type 3 Size Diameter : approx. 5.5mm/ 0.22 in note: Due to the lighting effects and shooting angles, there is color difference in the product, please understand. Due to manual measurement, there is a tolerance in the product size.