The Trident Marine Propane Leak Test Adapter with Gauge is installed between the propane tank valve and the regulator or pigtail hose. It allows you to easily determine if your propane system is leaking pressure (propane)
Tank fitting: Solid brass, male POL
Receptacle block: Solid brass, female POL
Dimensions: 4-1/2" L x 2-1/8" H x 1-5/8" D