• Shank Type: Taper Shank
• Taper Size: MT4
• Maximum Workpiece Weight (Lb.): 2200
• Point Diameter (Decimal Inch): 2.165
• Tip Diameter (Decimal Inch): 1.378
• Designed to keep dust, chips and coolant from coming inside the bearings
• Hardened and ground to 61-65 Rockwell
• Concentricity within 0.0002