Practical safety insurance accessory. This adapter automatically shuts off gas flow when pressure is reached, to ensure gas ugly gas safety. For maximum filling, place your bottle reservoir in the freezer for 30 minutes before filling . Built-in safety feature that ensures you never overfill your smallest cylinder. Made of high quality materials, durable and long service life. Delicate workmanship will work well to ensure your safety. Product Description You don't need to buy another cylinder anymore, you can use this adapter to fill your convenient 1LB (16. 4Oz). Handy safety insurance accessory. This adapter automatically shuts off the gas flow when the pressure is reached, to ensure gas ugly gas safety. Made of high quality materials, durable and long service life. The delicate finish will work well to ensure your safety. For maximum filling, place your cylinder reservoir in the freezer for 30 minutes before filling. Built-in safety feature that ensures you never overfill your smallest cylinder. Description: Net weight: approx. 113g. Color: black, gold. Size: approx. 66*50mm. Material: copper. Note: Please allow 1cm error due to manual measurement. please make sure you do not mind before bidding. Due to the difference between different monitors, the photo may not reflect the actual color of the item. Thanks Package including 1* Propane Refill Adapter