Practical safety assurance accessory. This adapter automatically shuts off the gas flow when the pressure is reached, to ensure the safety of gas using gas. For maximum fill, place your cylinder tank in the freezer for 30 minutes before filling. Built-in safety feature that will ensure you never overfill your smaller cylinder. Made of high quality material, durable and long service life. The delicate workmanship will work well to ensure your safety. Product Description You don't need to buy another cylinder again, you can use this adapter to fill your 1LB (16.4Oz) practical cylinder. Practical safety assurance accessory. This adapter automatically shuts off the gas flow when the pressure is reached, to ensure the safety of gas using gas. Made of high quality material, durable and long service life. The delicate workmanship will work well to ensure your safety. For maximum fill, place your cylinder tank in the freezer for 30 minutes before filling. Built-in safety feature that will ensure 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 you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Including 1 * Propane Refill Adapter