TEKTON 4734 1/2-Inch NPT Female by 1/4-Inch Male Reducer - Air Tool Fittings - Amazon.com
Grofry 1/4 inch NPT Male to 1/2 inch NPT Female Brass Pipe Fitting Reducer Adapter - Walmart.com
Parker - Industrial Pipe Adapter: 1/2″ Female Thread, 1-1/16-12 Male Thread, Male Straight Thread O-Ring x Female NPTF - 09107970 - MSC Industrial Supply
Grofry 1/4 inch NPT Male to 1/2 inch NPT Female Brass Pipe Fitting Reducer Adapter - Walmart.com
ATV UTV Receiver Hitch Adapter
G Thread (Metric BSPP) Male to NPT Female Adapter - Lead Free (1/2" x – Cascada Showers
Charlotte Pipe 1-1/2 in. x 1-1/4 in. PVC Schedule 40 MPT x S Reducer Male Adapter PVC 02110 1200HD - The Home Depot
Buyers Products 2-in to 1-1/4-in Hitch Adapter with Corrosion-Resistant Zinc Plating - Easy Conversion, Durable Steel Construction in the Trailer Hitch Receivers department at Lowes.com
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