Continue to make your own flavors of soda right from home with these iSi CO2 soda chargers. Made with a recyclable steel casing, this set includes 100 chargers. Each charger bottle contains eight grams of carbon dioxide and one charge per bottle fill. These chargers are leak proof and have no expiration date making them easy to keep on hand at all times. Designed to be used with your iSi soda siphons, these chargers help to carbonate your own soda water.8 grams