Available in a variety of brands, cream chargers are in most cases bought in packs of 10 or more

https://wiki-triod.win/index.php/How_to_Choose_the_very_best_Whipped_Cream_Chargers_for_Your_Requirements

Available in a range of manufacturers, cream chargers are generally offered in packs of 10 or extra, catering to both occasional clients and time-honored bakers.