The innovative instruments of the Deep Purple series have been designed for rapid and efficient removal during carving, thanks to the incorporation of highly abrasive diamond grains. This new granulation increases the lifespan of the bur and reduces dulling. ISO: 103 - Maximum Speed: 300,000 rpm - Shape: CONICAL ROUND Diameter 016 - Shank TURBINE EXTRA COARSE SPECIAL Grain Type: EXTRA COARSE SPECIAL - Application: Carving Preparation - Packaging Quantity: 5 pcs.