3/8 x 1/2 Brass Compression Coupling

Anderson Metals Brass Compression Connector, Lead Free, 3/8 x 1/4 In. MPT

Compression Union, 1/2x3/8

Anderson Metals 750082-0806 Tube Reducing Union, 1/2 x 3/

3/8 Brass Compression Fitting x 1/2 Male NPT - Canuck Homebrew Supply, Canada

Proplus Part # 272384 - Proplus 3/8 In. X 1/2 In. Lead Free Brass Compression Female Adapter - Brass Compression Adapters - Home Depot Pro

PlumbShop Brass Compression Fitting, 3/8-in OD x 1/2-in MIP, 1-pk

Anderson 750066-0608 3-Piece Tubing Coupling 3/8 /2 in Compression X FIP for sale online

Sioux Chief 3/8 inch x 1/4 inch Lead-Free Brass Compression x Compression Union with Inser

Brass Reducing Coupling - 1/2 to 3/8 Female Pipe Thread