Proline Series 5/8-in x 5/8-in Threaded Female Flare x Female Flare Adapter Fitting in the Brass Fittings department at Lowes.com
Install a proportioning valve in your Miata without flaring tools! – Flyin' Miata
PrincetonCryo | Adapter, 3/8" MPT x 1/2" Flare, Brass
Amazon.com: AIVS 4 Pieces 6014 Vacuum Pump Adapter 1/4 Inch Flare Female to 1/2 Inch Male and 6015 R134A Brass Refrigerant Tank Adapter to R12 Fitting Adapter 1/2" Female to 1/4" Male
EMA 1/8" FPT to 3/8" Flare Adapter – East Marine Asia
3/8 inch flare x 1/8 male MPT Pipe Adapter Brass Fitting Connector NPT water | eBay
Tilton 3/8-24 Inverted Flare Female to 3AN Male Adapter | Pegasus Auto Racing Supplies
LTWFITTING 3/16 in. Flare x 1/8 in. MIP Brass Adapter Fitting (5-Pack) HF483205 - The Home Depot
Amazon.com: Legines Brass Tube Fitting, SAE 45 Degree Flare Adapter Union, 3/4" Flare Male to 1/4" NPT Male (2pcs) : Industrial & Scientific
Buy Lasco Female Flare X Male Pipe Thread Adapter 3/8 In. F FL X 1/4 In. MPT
2pcs Brass Tube Fitting Sae 45 Degree Flare Adapter 1/8" 3/16" 1/4" 5/16" 3/8" Sae Male X 1/8" Npt Male Quick Connector - Pipe Fittings - AliExpress