Mr. Heater 12-Feet Propane Hose Assembly, Swivel 1 by 20 Male Throwaway Cylinder Thread x Swivel 1 by 20 Female Throwaway Cylinder Thread 1"-20 Throwaway Cylinder Extension Hose" Swivel 1 -20 inch Male Throwaway Cylinder Thread x Swivel 1 - 20 inch Female Throwaway Cylinder Thread Used with most distribution posts or T and Y connectors as well as 1lb. disposable cylinders Hose material stretch tested to 400 psi Hose material pressure tested to 600 psi