1.Propane Refill Adapter for 1 lb. tanks:This 3FT propane refill adapter hose comes with quality rubber to ensure leakage operation while providing excellent weather resistance.The propane refill adapter for 1 lb. tanks of this propane refill hose is made of solid brass to ensure secure and durable for long lasting use.The 1lb propane tank refill adapter meets strict quality control standards during building and testing. 2.Propane tank refill adapter wide range of compatibility:This propane refill adapter hose can refill the 1lb camping bottle and connect 20 50Lb propane tank directly, convenient for those with larger tanks.Fits for heater, camp stove, portable grill, tabletop grill, etc.The 1 lb propane tank refill adapter is great for camping, tailgating, heating needs or having an outdoor cookout. 3.3FT propane refill adapter hose feature:Length 3 feet / 36 Inch / 91 cm. Rate pressure 350PSI.Connection QCC1/Type1 connector to 1' x 20 female throwaway cylinder thread.350PSI rated high pressure propane extension hose. Propane adapter refill hose allows for easy and quick attachment for easier installation.The 1 pound propane tank refill adapter can easily connect your big cylinder to the small 1LB propane tank without moving or carrying, saving you time and trouble. 4.Propane refill adapter for 1 lb. tanks use advice:Over flow protection device is designed in the QCC adapter.Connect the QCC1 adapter to your tank first and open gas for a few seconds then connect the propane filler adapter 1 pound to your small tanks or it may not work.On the propane refill adapter for 1 lb. tanks with on off control valve, if you do not want to refill, close the refill valve.The other side uses QCC1 standard 20 50 lb propane tank connector.