DEWALT 1/4-in to 1/2-in Socket Adapter in the Socket Adapters department at Lowes.com
Milwaukee SHOCKWAVE Impact Duty 1/4 in. x 3/8 in. Alloy Steel Square Socket Adapter 48-32-5031 - The Home Depot
Milwaukee SHOCKWAVE 1/2 in. Square x 1/4 in. Hex Impact Adaptor 48-03-4410 - The Home Depot
Wera - Socket Adapter: Square-Drive to Hex Bit, 1/2 & 1/4" - 01135268 - MSC Industrial Supply
4pcs 1/4 "3/8" 1/2 Inch Drive Socket Adapter Reducer Joint Drive Air Impact Heavy Duty Ratchet Adapter Set Set Universal Sleeve - Hand Tool Sets - AliExpress
Husky 3/8 in. Female to 1/4 in. Male Drive Adapter HADPTR3814 - The Home Depot
2 PCS 1/2 inch Square Drive to 1/4 inch Hex Female Socket Adapter Converter Chuck Adapter for Impact Air and Electric Wrench - - Amazon.com
3/8 To 1/4 1/2 Inch Drive Ratchet Converter Socket Adapter Reducer Air Impact | eBay