4 Pieces 1/2 Inches Square to 1/4 Inches impact adapter hex adapter Female Socket with Aprons and Sockets, Socket Extension Kit Accessories for Pneumatic and Electric Wrenches - Amazon.com
LEXIVON Impact Grade Socket Adapter Set, 3" Extension Bit With Holder | 3-Piece 1/4", 3/8", and 1/2" Drive, Adapt Your Power Drill To High Torque Impact Wrench (LX-101) - Walmart.com