Concentrated strength, longer lifespan, better control. DIAO instruments stand out for their handling, vibration-free operation, and smooth work on the tooth. Optimal speed 160,000 rpm. Round conical diamond ISO: 103 - Maximum Revolution: 300,000 rpm - Shape: CONICAL ROUND Diameter 021 - Turbine Shank - Grain Type: - Application: Crown Preparation - Packaging Quantity: 5 pcs