• Shank Type: Taper Shank • Taper Size: MT4 • Maximum Workpiece Weight (kg): 1300 • Accuracy guaranteed to 0.002mm TIR (0.0001") • Excellent for grinders and CNC machines • Heat treated point to HRC 60±2 • High RPM (up to 6,000) • Five Bearing System: A double row angular contact bearing, two single row angular contact bearings, and a rear needle roller bearing combine to provide improved runout, greater stability, longer tool life, and superior performance • Anti-friction seal for coolant deflection and high speed • Heat treated body for extra strength, rigidity, and long life • Shaft borehole for easy, efficient dismounting • Drop forged body (HRC50±2) for long life • 60º point angle