Features EASY REFILLING - Can connect the soft drink maker to a 5lb, 20lb or 50lb siphon-free commercial CO2 tank equipped with a CGA320 outlet valve. Stable in work: With corrosion resistance, high temperature ductility, and low magnetic permeability to withstand up to 100℃, 212℉. GREAT MATERIAL - Made of stainless steel, brass and aluminum materials for better gas-tightness when working at a pressure of 4500 psi. IDEAL MATCH: Also equipped with a 60 inch long hose, which allows a stable connection without leaks to greatly simplify filling. Rubber Washers: Using food grade rubber material, the washer is safe to use and will not transmit chemical flavor to carbonated water. Specification: Item type: soda charging adapter Material: stainless steel, brass, aluminium. Connector specifications: CGA320 Package List: 1 x Soda Charging Adapter 2 x Dust Covers 2 x Large Washers 1 x Small Washer 1 x User Manual Package List 1 x Soda Refill Adapter 2 x Dustproof Cover 2 x Large Washer 1 x Small Washer 1 x User Manual