Taper Size CAT50 Shank Type Taper Shank Hole Diameter Decimal Inch 125 Nose Diameter Decimal Inch 288 Projection Decimal Inch 414 FOR DUAL CONTACT SPINDLES Improves rigidity and reduces vibration allowing for increased feed rates and increased tool life DIN coolant option standard Rough milling or hogging operations Improved tool life over regular end mill holders 360Deg gripping contact Extreme rigidity over taper collets 00002 TIR for maximum tool life and accuracy.