PROFLO® 3/8 in. OD x 3/8 in. MIP Brass Compression Adapter - B6866X - Ferguson
Compression Tube Fittings - Poly Male Adapters 3/8" x 1/2"
INIRET 4 pack Brass Pipe Fitting,Water pipe adapter, G1/2 inch Female to 3/8 inch Male Reducer Adapter,Compression Fitting for Kitchen Bathroom Faucet, Pipe Connector with Rubber Washer. - - Amazon.com
LASCO 17-6755 3/8-Inch Female Compression by 1/4-Inch Male Compression Brass Adapter - Pipe Fittings - Amazon.com
1/2″ OD Compression by 1/2″ Female Pipe Adapter – DEA Bathroom Machineries
Compression Tube Adapter x FJIC - 3/8" – Open Source Steel