Features: 1W21.814 // TR214 threaded connection good sealing no leakage. 2With 3000PSI pressure gauge it is easy to fill with CO2 gas and simple to operate. 3Using highquality brass material high pressure resistance durable to use. 4Carbon dioxide cylinder refill adapter stable and reliable performance. 5Exquisite workmanship stable inflation easy to install and use. Specification: Item Type: CO2 AdapterMaterial: BrassWeight: Approx. 198g / 7ozTotal Length: Approx. 6cm / 2.4inThread: W21.8-14 // TR21-4Applicable Countries: South Korea Japan Britain Germany France Poland Norway Switzerland Russia Ukraine South Africa Sweden Chile Czech Republic Singapore. (some countries are also called DIN477 /JIS m22-14)How it Works:1. Screw the adapter onto the CO2 gas cylinder2. Screw the empty CO2 bottle into the on/off recharge adapter3. Open the valve of the large cylinder4. After 15-20 seconds the cylinder is completely filled5. Close the large cylinder valve6. Open the exhaust valve screw to discharge residual gas unscrew the screw of the carbon dioxide container and finish. Package List: 1 x Adapter1 x Right Angle Wrench1 x Gasket2 x Protective Ring1 x Screw Buckle Note: 1.Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2.Monitors are not calibrated same item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.