PREMIUM MATERIAL: This gas refill adapter is made of premium copper, durable for long time use. The device has a diameter of about 8 mm and a length of 17 mm. Usually used for long gas tanks or flat gas tanks to refill butane. ECONOMIC: It is convenient to refill your gas cylinder for low consumption so that you can use gas economically. EASY USE: This gas refill adapter is small and powerful, easy to carry and reliable to use. IMPORTANT NOTES: After filling the cartridge, it is always advisable to check cartridge seal for leaks. Only fill your canisters in a well-ventilated place. OTHER USE: This gas refill adapter adopts fine workmanship and delicate design. It is suitable for outdoor camping, hiking, etc. Gas Refill Adapters,Gas Refill Adapter,Outdoor Gas Recharge Adapter,Adapter Brass Gas Refill Adapter, Butane Gas Refill Adapter, Burner Inflation Accessories