Nangs, also often known as cream chargers, are small metallic canisters stuffed with nitrous oxide
https://zenwriting.net/dueraiffvs/planning-a-party-heres-why-you-need-nangs-delivered-in-melbourne
Nangs, additionally also known as cream chargers, are small steel canisters choked with nitrous oxide. They are customary for whipping cream however are in many instances misused for recreational functions.