DCA 2PCS 1/2 inch Square Drive to 1/4 inch Hex Female Socket Adapter Converter Chuck Adapter for Impact Air and Electric Wrench - Amazon.com
Milwaukee SHOCKWAVE Hex Shank Socket Adapter Set 48-32-5033 from Milwaukee - Acme Tools
DeWALT DW2547IR 1/4 in. Hex Shank to 1/2 in. Socket Adapter (Impact Ready) at Tractor Supply Co.
Wera - Hex Driver Bit Adapter: Quick Release - 02091932 - MSC Industrial Supply
Amazon.com: Quick Release 1/2-Inch Square Drive to 1/4-Inch Hex Female Socket Impact Adapter Drill Chuck Set of 2 for Air and Electric Impact Wrench : Patio, Lawn & Garden
SZ-5-7-5MM Apex Socket Head (Hex-Allen) Bit with Drive Adapter, 1/2'' Square Drive, Metric | Dotco Tool