Camco's 24 in pigtail propane hose connector is designed to connect a propane cylinder to an RV or trailer propane regulator. It has a ACME nut x 1/4 in inverted male flare. It is-rated for 200,000 Btu/hr. Safety features include thermal protection in case of fire and excess flow protection in case of broken gas line. You can use the pigtail hose with a 20 lb or 30 lb refillable propane tank and connect it to a regulator or four-Port brass tee. It can also be used to connect to an installed four-port tee as an auxiliary propane supply.