Milwaukee® SHOCKWAVE™ 48-32-5100 Impact Socket Adapter, 1/2 in Bit/Drill Size, 7/16 in Shank Dia, Hexagonal Shank | First Supply
Milwaukee Tool 1/4-inch x 3/8-inch Steel Square Socket Adapter | The Home Depot Canada
Socket Adapter Set - 48-32-5033 | Raider Hansen
Note: Ryobi impact socket adaptors don't stand up to the Milwaukee : r/Tools
Milwaukee Tool 1/4-inch x 1/2-inch Steel Square Socket Adapter | The Home Depot Canada
Milwaukee SHOCKWAVE 48-32-5730 Impact Duty Socket Adapter, Hex x Square Drive, 1/4 in Male Drive, 1/4 in Female Drive, Female x Male Adapter, Proprietary Steel