Features:1 Adapter standard: BT MAS403;2 Clamping range: 2.75 – 12 mm;3 With slim collet: DC6, DC8, DC10, DC12;4 Run out: < 0.005 mm at length of 4D;5 Balanced: G2.5;6 Max. RPM: 30,000;7 Internal Coolant.Application:1 This precision collet chuck with a slim design avoids interference;2 Ideal for small die and mold making, combining high speed and high precision capability.D=34;L1=55;L=90;suit collet:D12;wrench:M8 Package£ºplastic tube+air bubble + carton box