• Shank Type: Taper Shank
• Taper Size: HSK63A
• Hole Diameter (Inch): 5/16"
• Nose Diameter (Decimal Inch): 0.874
• Projection (Decimal Inch): 5
• Through Coolant: Yes
• All Ground Body
• High rigidity & torque transmission
• Premium balanced to 30,000 rpm
• Comes with certificate