Box of 10 N2O Cartridges. To be used with Kayser cream dispensers only.* Made with recyclable steel* Silver lacquered* Non-refillable cylinders* Each charger is checked for correct gas content* One charger whips up to 0.5 liter of fresh whipped creamKayser uses the cleanest and purest Nitrous Oxide in the world manufactured to be pure and free of any by-products. Made in Austria.