Crown Industries - GFS050M - 5/8" Flare x 1/2" MIP Gas Adapter
5/8 OD Flare x 1/2 MIP (Tapped 1/2" FIP) Gas End Fitting Adapter.

Description
5/8 OD Flare x 1/2 MIP (Tapped 1/2" FIP) Gas End Fitting Adapter.
5/8 OD Flare x 1/2 MIP (Tapped 1/2" FIP) Gas End Fitting Adapter.

5/8 OD Flare x 1/2 MIP (Tapped 1/2" FIP) Gas End Fitting Adapter.