Milwaukee 3/8 in. Square x 1/4 in. Hex Shockwave Impact Adapter 48-03-4405 - The Home Depot
Impact Driver Socket Adapter Set 3 PCS - 6” Drill Bit Extension Impact Bit Socket Adapter Set-1/4” 3/8” 1/2” Head with 1/4” Hex Shank Long Socket Extension Bit Set - Amazon.com
Amazon.com: Impact Socket Adapter Set - 1/4 Inch Hex Shank Extension Square Driver Drill Bit to Drive 1/4" 3/8" 1/2" Adapters Power Hand Tools for Cordless Drill CR-V Quick Change Nut Driver