Mosa CO2 Soda Chargers, Pack of 40 Casing constructed from non-threaded weld-sealed cadmium-coated steel Each carton contains 10 CO2 Soda Cartridges- 8 grams of CO2 per cartridge Carbonate any beverage at home Compatible: all current model soda siphons including iSi, Sodaplus, Mosa, Liss The carton of 10 cartridges is perfect size for locations with limited space or the occasional user- minimum shelf life of 5 years