Power drawbar is an important component in the machining industry that facilitates quick tool changes and improves overall productivity. There are several synonyms for power drawbar, including automatic tool changer, spindle drawbar, and tool release system. All of these terms refer to the same functionality of automatically clamping and unclamping tools on the spindle of a milling machine. Some other related terms that are often used synonymously with power drawbar include tool holder, retention knob, and collet. Regardless of the specific term used, the importance of power drawbars in ensuring efficiency and accuracy in machining operations cannot be overstated.