AUTOTOOLHOME Black 1/4-inch Shank Keyless Chuck Conversion Tool for Power Drill Impact Driver Instantly convert impact driver to hold non-quick change drill & driver bits Keyless chuck finger-tightens for easy bit changes Capacity range 0.02" (0.5 mm) to 0.3" (8 mm) Quick-change hex shank for instant swaps Fits all chucks, 1/4" impact drivers, & quick-change adapters