Masterflex Fitting, PTFE, Straight, Hose Barb to Threaded Adapter, 3/8" ID x 1/2" NPT(M) from Cole-Parmer
Vfauosit Brass Pipe Fitting, Water Hose Adapter, 3/8 inch Male x 1/2 inch Female water pipe adapter 3/8 to 1/2 pipe adapter Reducer Adapter 2 Pieces - - Amazon.com
Amazon.com: Joywayus 3/8" to 1/2" Barb Fitting Reducer Hose Barb Splicer Hex Union Brass Fitting Water/Fuel/Air (Pack of 3) : Industrial & Scientific
1/2" NPT To 3/8" Flare Adapter
LB White Hose Adapter 3/8" x 1/2" for Models 278/379 | QC Supply
Dorman - HELP 1/2in X 3/8in Plastic Heater Hose Connector
Amazon.com: Beduan Brass Hose Barb Reducer, 1/2" to 3/8" Barb Hose ID, Reducing Barb Brabed Fitting Splicer Mender Union Air Water Fuel : Industrial & Scientific
Amazon.com: Global Ma 1/2" Male x 3/8" Female Thread Reducer Bushing Pipe Fitting, Adapter, Stainless steel SS 304 NPT : Industrial & Scientific
Water Hose Adapter, Arofa Brass Faucet Hose Adapter 3/8 to 1/2 Adapter Compression Fitting with 1/2 to 3/8 Reducer Kitchen Faucet Hose Adapter 2 Pieces - - Amazon.com
Anderson Metal 757002-0806 129f Series Hose Adapter, 1/2 in, Barb, 3/8 in, Fpt, Brass (719852951988-1)
EATON WEATHERHEAD Hydraulic Hose Adapter: 1/2 in x 3/8 in Fitting Size, Male x Female, 0.75 in Overall Lg, Rigid - 20KF57|3220X8X6 - Grainger
1/2" Hose ID x 3/8" Hose ID Reducer Barb Mender/Splicer/Joiner/Union Fitting Brass Tubing Hose Adapter/Coupler: Industrial Products: Amazon.com: Industrial & Scientific
38-336 | Male Adapter, 1/2" hose x 3/8" NPT: DiscountHydraulicHose.com