You wouldn't to buy another cylinder again, you can use this adapter to refill your 1lb(16.4oz) disposable bottle Built in safety feature that will ensure you NEVER over-fill your 1lb throwaway cylinder.For Your Safety, this adapter automatically cuts off gas flow when pressure is reached For maximum filling, place your cylinder tank in the freezer for up to 30mins before filling it Well-constructed 100% high quality solid brass construction makes it corrosion resistant Easily fill one pound bottles.Built Heavier, Bigger, and Safer than others on the Market. 1、You wouldn't to buy another cylinder again, you can use this adapter to refill your 1lb(16.4oz) disposable bottle 2、Built in safety feature that will ensure you NEVER over-fill your 1lb throwaway cylinder.For Your Safety, this adapter automatically cuts off gas flow when pressure is reached 3、For maximum filling, place your cylinder tank in the freezer for up to 30mins before filling it 4、Well-constructed 100% high quality solid brass construction makes it corrosion resistant 5、Easily fill one pound bottles.Built Heavier, Bigger, and Safer than others on the Market.