A device used to "crack" the seal on Nitrous cartridges for inhaling the N20 for a high.
The cracker is commonly aluminum, brass or plastic and simply accepts a N20 cartridge (
intended for dispensing whip-cream) and pierces the seal, allowing the gas to escape in a controlled fashion. A baloon is
attached to the device to capture the gas and allow it to absorb enough heat to be inhaled safely.