COARSE GRAIN DIAMOND BURS FOR CROWN PREPARATION, CONICAL FINISH WITH BEVEL, ROUND, ADAPTED TO THE H375R TUNGSTEN CARBIDE FINISHING INSTRUMENT. ISO: 103 - Maximum Speed: 300,000 rpm - Shape: CONICAL ROUND Diameter 021 - Turbine Shank COARSE Grain Type: COARSE - Application: Carving Preparation - Packaging Quantity: 5 pcs