These are the Argon cartridges that come with the Ultra Wine Saver kit. Each cartridges is filled with 124 cubic inches of 99.99% pure Argon (although what comes out for various reasons is 98%-ish). one cartridges holds enough for 18 bottles of wine generally--based on a 5 second application. They're included in the 49.95 dollar kit along with 3 silicone stoppers. Refills of 3 can also be bought; $9.00.
