Brass Pipe Fittings, Water Hose Adapter, G 1/2 Female to G 3/8 Male Reducer Adapter, Compression Fitting for Kitchen Bathroom Faucet, Pipe Connector with Rubber Washer,(2 Pack) - - Amazon.com
1"Female x 1-1/2"Male Square Drive Adapter | Fastenal
Sunex 3300 3/8-Inch Female by 1/2-Inch Male Socket Adapter with Friction Ball Drive - - Amazon.com