1/2 to 3/8 Reducer, Vfauosit 3/8 to 1/2 RV Faucet Adapter Brass Compression Fitting Faucet Supply Line Adapter for Plumbing Water Hose 2 Pieces - - Amazon.com
Apeks Adaptor 1/2 to 3/8 Silver | Diveinn
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
K&M 215 Thread Adapter - 1/2" and 3/8" Female to 5/8" Male | Sweetwater
3400: 3/8″ Male NPT to 1/2″ Male Flare Adapter | Fittings, Inc.