Sturdy And Durable: It is made of brass to ensure that it will not rust after long-term use and has strong durability. The adapter's solid bras materials ensure longevity as well as Universal usage. Will not wear down and/or fall apart using propane refill adapter is a Heavy-Duty, reliable, and rust-free operation. Easy Installation: The adapter allows you to refill the gas cylinder in less than a minute. For maximum filling, first put the empty 1lb tanks in the freezer for up to 30mins. Then use this adapter to connect it to a 20lb tank. Turn the big bottle upside down, then open the valve, and it will fill up in less than a minute. Finally, close the valve and disconnect. Safe: Extremely durable and precise threads firmly and effectively connect 1 pound and 20 pound propane tanks without worrying about gas leakage. The built-in safety function ensures that you will never fill a smaller tank with water, and will automatically cut off the air flow when pressure is reached. Propane Refill Adapter: Shirbly's propane refill adapter allows you to no longer worry about the problem of no fuel in a 1lb propane storage tank, just use it to replenish your 1lb propane storage tank with a larger propane storage tank. Very suitable for camping, trailing, heating needs, outdoor cooking and more. Easy Set Up: Ready for use right out of the box, place one end of the adapter on your 20lb propane tank, The other end on your 1lb propane tank, and you're ready to refill. fits Qcc 1/ Type 1 & 1 lb propane tanks.