WORLDS - HIGHEST - QUALITY N2o This 4 box combo is a Fantastic Value at only $24.50 with no extra shipping charges! Whip-eez brand Whipped Cream Chargers are all standard screw valve Nitrous Oxide whipped cream chargers. This offer contains 4 - 10 Pack boxes (40 chargers total). This Case ships with USPS priority Mail only (2 - 3 day delivery). Shipping and Insurance is included. This item can also be shipped to a post office box! Whip-eez chargers Never Expire! Restaurant Quaity Pure Nitrous Oxide - BEST AVAILABLE in the U.S. Whip-eez Brand is a High Quality Nitrous Oxide Food Propellant offering the Worlds Highest Quality, Pure Nitrous Oxide gas packaged in standard 8 gram chargers for the North American coffee shop, restaurant, bar, ice cream shop and gourmet food market. Whip-eez Brand Nitrous Oxide (N2o) Whipped Cream Chargers are the highest quality product available in the world today. Whip-eez Nitrous Oxide chargers are manufactured by one of Europe's largest and most respected Co2 and N2o production facilities. Whip-eez Brand chargers are 100% compatible with all standard screw valve dispensers including all iSi Whip Cream dispensers (whippers) and Soda Siphons, Liss Whipped Cream Dispensers and Soda Siphons, and Kovocas of Czechoslovakia. With the exception of the Kisag Push Valve units, our chargers are guaranteed to work with all whip cream dispensers currently for sale in North America. All of our Whip-eez consumer nitrous oxide and carbon dioxide chargers are manufactured in strict compliance with guidelines specified by the International Standards Organization. Chargers are made out of the finest steel available and must pass through several stringent cleansing processess before being filled with N2o.