Features:-Mounting kit for Soda stream water bubbler with CO2 high-pressure hose and cylinder valve adapter.-Flexible, 1.5 m long high-pressure hose made of reinforced nylon.-The connection has a CO2 hexagon nut with W21.8-14 IT and an adapter with M18x1.5 IT.Specification:Tube length: 1.5mSpecifications: W21.8-14/M18x1.5Material: plastic + metalHow to use:1. To assemble the pressure hose, you need a completely empty DUO carbon dioxide gas bottle. Important: Before starting work, check whether the gas bottle is completely empty by pressing in the valve. Then clamp the gas cylinder in a vice and unscrew the valve.2. Now screw the DUO cylinder valve into the adapter. The aluminum ring must be mounted as with the bottle! Now insert the adapter into the sparklin.