Milling Chuck, Taper Size BT50, Hole Dia. 32mm, Nose Dia. 2.7100 in, Collet Series KM32, Projection 165.00mm, Coolant Fed Coolant Through, Bore Depth 2.5300 in to 4.1300 in, Clamping Range 3.00mm to 32.00mm, Features 140 Percent More Bearing Surface than Competitor Milling Chucks;For Quiet and Stable Heavy Milling;Nikken Patented Design;Nut Body Contact, Nose Clamping and Anti-Vibration Mechanism;Thick Body and Internal Slots Provide Extremely Strong Chucking Torque and Rigidity