Mr. Heater F273711 Hose Assembly, Specifications: 1in-20 Connection Size, Male x Female Connection Type, Brass

Swivel 1 in - 20 male throwaway cylinder thread x swivel 1 in - 20 female throwaway cylinder thread. Used with most distribution posts or "T" and "Y" connectors as well as 1 lb. disposable cylinders. Hand tighten swivel on both ends.