Tool locking device is offered by hi-tech cnc marketing & services. This tool locking device is an essential accessory for tightening of collett chucks used in conventional/cnc milling and machining centers. Following are some technical features of this tool locking device which include: normally operators tighten the collett chuck in the machine spindle by tapping, which results in damage to the spindle and also increases machine idle time. With tool locking device, the tools can be tightened firmly outside and mounted in the machine spindle. Also the clamping will be more secure. This tool locking device finds its applications in:pull stud tightening. The device is available in various models to suit all types of spindles like bt/iso 30, 40, 45, 50, mt2, mt 3, etc.