Everbilt 1/2 in. Flare x 1/2 in. FIP Brass Adapter Fitting 801359 - The Home Depot
Female Flare (1/4 FFL) to 1/4" Male NPT Adapter
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3AN/42 degree Inverted Flare 7/16-24 Brake Adapter, Short | Pegasus Auto Racing Supplies
Dormont 90-3031R Gas Adapter Fitting 5/8-Inch OD Flare by 1/2-Inch Male, Brass flare adapter for use with 5/8 inch OD gas range connectors By Watts - Walmart.com