This Mr. HeaterA(R) 5' Propane Hose Assembly works with everything from 1-lb. disposable cylinders to 20-lb. tanks. Perfect for use with Mr. Heater Portable Buddy Propane Heaters. Swivel 1 - 20 in Male Throwaway Cylinder Thread x Swivel 1 - 20 in 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 Solid brass fittings