CO2 Chargers (10pcs) 8g
These carbon dioxide cartridges do not have a tread but go with common soda siphons. They are filled up with natural carbon dioxide. In general one cartridge lasts for one litre water.
They are available in packages with 10 pieces.
Please remind that these carbon dioxide cartridges are not refillable.
The consumed cartridges are reusable as discarded metal and they are free of propellant gas.