90° Adapter connects camper and additional appliance to old and new 20-lb. propane tank. 12' Propane Hose Assembly: Swivel 1"-20 Male Throwaway Cylinder Thread x Swivel 1"-20 Female Throwaway Cylinder Thread. 90 degree stay Flow Adapter: Excess Flow Soft Nose P.O.L. x 1"-20 Male Throwaway Cylinder Thread x Female P.O.L. and Acme Thread.