Impact Socket Adapter and Reducer Set, Use with Impact Wrenches and Drills in Auto and Impact Driver Construction Work, 8 Piece - (3/8in. to 1/4) (1/ 2in. to 3/8) (3/8in. to 1/2) (1/4in. to 3/8) … - Amazon.com
Wera 042671 Square Drive Size Adapter, 1/4" to 3/8"
Milwaukee Tool SHOCKWAVE Impact Duty 1/4 -inch - 1/2 -inch Drive Adapter Set (4-Piece) | The Home Depot Canada