Make it Snappy Tools 3/8 Inch Quick Change Drill Bit Adaptor #42024

Recommended Drill Size: 3/8 Inch Drive Shank: 1/4 Inch Hex Power Bit Shank Fits all standard & specialty round shank bits, cobalt bits, brad point bits, & masonry bits Each adapter accepts a range of sizes Standard hex shank fits all power bit quick change chucks