Brass Pipe Fitting Reducer Adapter, 1/2" NPT Male x 3/8" NPT Female for Water Oil Air Pressure Gauge Temp Sensor - Walmart.com
79210 - Viega 79210 - 1/2" ProPress x 3/8" Male Bronze Adapter (Lead Free)
Threading Adapter, NPT 3/8 Male to NPT 1/2 Male
Aluminum Adapter, 1/2" Male NPT to 3/8" Female NPT | Air & Hydraulic Equipment,Inc.
LTWFITTING 1/2 in. FIP x 3/8 in. MIP Brass Pipe Adapter Fitting (20-Pack) HF1028620 - The Home Depot
3/8" Comp X 1/2" Female Compression Reducing Adaptor: Amazon.com: Tools & Home Improvement
3/8" x 1/2" Sch 40 PVC Reducing Male Adapter - Mipt x Soc 436-053
Craftsman 1/2" to 3/8" Socket Adapter
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
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
Masterforce® 3/8" Drive 1/2" SAE Impact Socket Adapter at Menards®