Propane Brass Tee: Female POL and Male ACME Thread, Excess Flow Soft Nose POL, 1"-20 Male Throwaway Cylinder Thread, 1/4" Inverted Flare 5' auxiliary tank hose: Soft-nose male POL x 1/4" inverted male flare. 12' additional appliance hose: 1" male and 1" female swivel -20 throwaway cylinder thread. Provides excess flow protection in case of a broken gas line Allows RV owners be able to hook their propane system to an auxiliary LP cylinder to avoid the need to move the motor coach when staying in one location for extended periods of time Stanbroil 12 feet Propane Quick-Connect Hose and Valve provide a quick connect propane connection to conect most low-pressure grills to RVs on-board propane supply. The Stanbroil RV 4-Port Propane Tee mounts in-line between the supply and regulator on a motorhome to allow the connection of an additional propane appliance and the hook-up of an auxiliary propane cylinder. Its ports include a female POL, Excess Flow Soft Nose POL, 1" - 20 male throwaway cylinder thread and 1/4" Inverted Flare. The 5' phone hose has an Excess Flow Soft Nose POL and 1/4" Inverted Male Flare. The 12' propane hose has a 1" male and 1" female swivel -20 throwaway cylinder thread.It allows RV owners be able to hook their propane system to an auxiliary LP cylinder to avoid the need to move the motor coach when staying in one location for extended periods of time.