RV, Double Stage, Propane, Auto , Replacement For 5′ Hose In Propane Kit 59123, Excess Flow Soft Nose POL x 14 Inverted Male Flare, Connects A Propane Cylinder To Any Device That Has A 14 Inverted Female Flare Connection, Comes With Dual Propane Tank Hookup, It Has Automatic That Maintains The Constant Gas Pressure Automatically Changes From Empty Tank To Full One, Regulator Allows The Removal Of Empty Cylinder For Refill Without Interrupting Propane Supply