HTS 110K4 Keyless Conversion Chuck Adapter for Power Impact Driver - 1/4 Capacity by Pro Instantly convert impact driver to hold non-quick change drill & driver bits Keyless chuck finger-tightens for easy bit changes Capacity range 3/64" (1.2mm) to 9/32" (7.0mm) Quick-change hex shank for instant swaps; fits all chucks, 1/4" impact drivers & quick-change adapters For right-hand drilling or driving; also available in 1/8" capacity