Carbonated Mist Care Plosion Pro-sion dedicated This is a set of 4 carbon dioxide gas cartridges. Manufacturing Dates: December 7, 2015 (3 cartridges) May 30, 2012 (1 cartridge) Although these are new and unused, there may be minor scratches due to home storage. It is stated that the contents are fine if the containers are not damaged, but we cannot guarantee any issues that may arise. Please be aware of this. They may be removed from the original box for packaging and shipping.