This 7-piece drill bit adapter set converts standard round-shank twist drills to 1/4" hex power bits, so they run in any quick-change chuck or impact driver instead of a keyed drill chuck. Each collet-style adapter accepts a small range of bit diameters, and the bright-finish HSS bits included are rated for metal, wood, or plastic.
- Set includes one each of 1/16", 3/32", 1/8", 5/32", 3/16", 7/32", and 1/4" drill adapters
- Each adapter holds bits from .005" larger to .010" smaller than its listed size
- Hex socket included to loosen the adapter's set screw for drill replacement
- 1/4" hex power bit shank fits standard quick-change chucks and impact drivers
- Made in the USA
Chuck the adapter you need into a quick-change holder, insert a round-shank bit, and drill without swapping to a keyed chuck.