NIUNIU Wide Range of Application: The filling adapter can connect the cylinder with any large CO2 tank, and is suitable for large gas tanks with or without residual pressure valve. High-Quality Material: Brass has high strength, good plasticity, can withstand hot and cold pressure well, and has a long service life. Good Sealing Performance: There is no air leakage when using this adapter to connect the cylinder, and the use is more assured. Premium Filter Cartridges: Our adapters use improved filter material to eliminate the taste and smell of carbonated water for a better experience. Easy to Use: This adapter of ours can be used many times in freezing temperature, making it more convenient for you to use. Quantity: 1pc Color: as pictured Size: about 78mm long