Reducer Brushing Pipe Fitting - 1/2 in. Male to 3/8 in. Female - Made of Solid Brass in Chrome Finish - Fits Standard 1/2 Supply Line Plumbing Hardware - Renovators Supply - Walmart.com
3/8 in Tube O.D. x 1/2 in MPT, Male Connector Molded Compression Tube Fittings - 1568X6X8 - Hi-Line Inc.
1/2" x 3/8" FPT x FPT Class 150 Sch 40 PVC Reducer Coupling | Fastenal
NDS PVC S&D Increaser/Reducer Coupling, 3 in. Hub X 4 in. Hub 4P07 - The Home Depot
1/2" Male Pipe Thread - 1" PVC Slip Tee Fitting | The Bucket Company
Zoro Select PVC Reducer, MNPT x Socket, 1/2 in x 3/8 in Pipe Size 436073 | Zoro