Aluminum Adapter, 1/2" Male NPT to 3/8" Female NPT | Air & Hydraulic Equipment,Inc.
1/2" Tube to 3/8" Tube Compression Adapter
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) - Walmart.com
Threading Adapter, NPT 3/8 Male to NPT 1/2 Male
CRAFTSMAN 1/2-in to 3/8-in Standard Socket Adapter in the Socket Adapters department at Lowes.com
3400: 3/8″ Male NPT to 1/2″ Male Flare Adapter | Fittings, Inc.
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
3/8" x 1/2" Sch 40 PVC Reducing Male Adapter - Mipt x Soc 436-053
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
U.S. Solid 2pcs Brass Pipe Fitting Adapter, Male Pipe x Female Pipe, 1/2" x 1/
Gas Pipe Adapter - 1/2 in. MPT x 3/8 in. Male Flare | MoreBeer