Marshall Excelsior ME2132P Inverted Flare Adapter is most commonly used on some auto change over dual stage regulators. It features a 1/4" MNPT x 1/4" female flare plug. Durable brass construction.
Most commonly used on some auto change over dual stage regulators 1/4" inverted female flare x 1/4" MNPT Brass construction Plastic clamshell packaging