Anderson Metals - 56120-0808 Brass Pipe Fitting, Adapter, 1/2" Male Pipe x 1/2" Female Pipe: Industrial Pipe Fittings: Amazon.com: Tools & Home Improvement
Proline Series 3/4-in x 3/4-in Threaded Male Adapter Nipple Fitting in the Brass Fittings department at Lowes.com
1" NPT Male Pipe x 3/4" Garden Hose Male Adapter – FireHoseSupply.com
Parker - Industrial Pipe Adapter: 1/2" Female Thread, 1/2" Male Thread, MNPTF x FBSPP - 60041951 - MSC Industrial Supply
Everbilt 1/2 in. Copper Pressure Cup x MIP Male Adapter Fitting C604HD12 - The Home Depot
Fitting - 1/2" NPT Male x 1/2" NPT Female Adapter. NorCal Brewing Solutions
LASCO 1-1/2-in Schedule 40 PVC Male Adapter at Lowes.com
1/2 to 3/8 Reducer Faucet Adapter - Compression Brass Pipe Fitting, 3/8 Male to 1/2 Male Supply Line Adapter for RV Kitchen Plumbing, Water Hose Pipe Connector with Rubber Washer, (2 Pack) - - Amazon.com
1/2 In. Brass Male Female Thread Adapter Connector Plumbing Pipe Fitting Kit New | eBay
Adapter - 9/16-18 Female to 1/4 Male NPT | Mill Supply, Inc.