Unique design with pump action auto-loading mechanism. Simply pull back on the handle of the driver, rotate the handle to select the desired bit & then push back into place. Guaranteed fast bit changes in just a few seconds. Features anti-roll handle & rotating front collar for fine adjustment. High quality nickel plated Chrome Vanadium steel bits: Slotted; 4, 6mm, Phillips; 1, 2, Pozi; 1, 2. Alternatively, preload with your own frequently used bit combination. Suitable for a vast range of professional applications. Model No. AK6451