CAT40 400 ER40 Collet Chuck
Collet System ER Collet Series ER40 Shank Type Taper Shank Taper Size CAT40 Projection Decimal Inch 4 DIN Coolant option standard All Ground Body Factory Balanced to save spindle life, tool life and increased productivity Threaded through holes for a backup screw tool stop or coolant through when removed Wrench not included Premium balanced to G25 At 30,000 rpm.