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

LASCO 17-6761 1/2-Inch Female Compression by 3/8-Inch Male Compression Brass Adapter, Copper - Pipe Fittings

LF4507575 - Uponor (Wirsbo) LF4507575 - 3/4 ProPEX x 3/4 Male Sweat Copper Fitting Adapter (Lead Free Brass)

This plumbing pipe coupling is easy to install for the PRO or for the DIYer. It's best used in low to medium pressure installs for water, gas and oil.

Everbilt 3/8 in. x 1/4 in. FIP Brass Reducing Coupling Fitting 801999 - The Home Depot

Everbilt 1/2 in. x 3/8 in. Female OD Compression Brass Reducing Coupling Fitting 800899 - The Home Depot

This plumbing pipe coupling is lead free and made of durable, corrosion resistant brass. It's used to connect 2 lengths of pipe either of the same

Everbilt 1/4 in. OD Compression x 3/8 in. FIP Brass Adapter Fitting 800909 - The Home Depot

PROFLO® 3/8 OD Female x 3/8 x 3/8 in. OD Tube Brass Female Tee Adapter

Everbilt 1/4 in. OD Compression x 3/8 in. Flare Brass Adapter Fitting 800779 - The Home Depot

Everbilt 3/8 in. x 1/4 in. OD Compression Brass Reducing Coupling Fitting 801229 - The Home Depot

LF4523850 - Uponor (Wirsbo) LF4523850 - 3/8 ProPEX x 1/2 NPT Male Adapter (Lead Free Brass)

Everbilt 3/8 in. x 1/4 in. OD Compression Brass Reducing Coupling Fitting 801229 - The Home Depot

12mm X 3/8FIP Metric Brass Compression x Female IP Connectors — COPPERTUBINGSALES

Everbilt 1/4 in. OD Compression x 3/8 in. Flare Brass Adapter Fitting 800779 - The Home Depot

Viega ProPress 1 in. Press x 3/4 in. FPT Zero-Lead Bronze Adapter (10-Pack) 79325 - The Home Depot

LTWFITTING 1/4 in. O.D. Comp x 3/8 in. MIP Brass Compression Adapter Fitting (5-Pack) HF684605 - The Home Depot