Features Easy Refilling: Can connect the maker to an non siphon 5lb, 20LB or 50lb commercial CO2 tanks that has 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 aluminium materials for better gas tightness when working under 4500 psi pressure. Ideal Matching: Also equipped with a 60in long hose, which enables firm connection without leakage to largely simplify the refilling. Rubber Washers: Using food grade rubber material, the washer is safe to use and will not transmit chemical taste to carbonated water. Specification: Item Type: Refill Adapter Material: Stainless steel, brass, aluminium. Connector Specifications: CGA320 Package List:1 x Refill Adapter2 x Dustproof Cover2 x Large Washer1 x Small Washer1 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