... machinig 2.The shank and keyless drill chuck are combined together so that to avoid ... and high -speed cutting 3. Each APU drill chuck attached 1pc APU wrench.4.Applied for end ... mill,drill bits,drill reamers taps and can clamp any straight ... clamping APU drill chuck holder,BT30 BT40 BT50-APU, and more detail information as follows Milling machine tool DRILL CHUCK HOLDER ...