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 ISO: 103 - Maximum Revolution: 450,000 rpm - Shape: EGG Diameter 018 - Turbine Shank - Grit Type: - Application: Crown Preparation - Packaging Quantity: 5 pcs