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Umarex 12 gram CO2 Cartridges, 12 Pack #2252533
**SAFETY NOTE** CO2 Cartridges (Capsules) may explode at temperatures above 120 Degrees F. Do not mutilate or incinerate them. Do not expose them to heat or store them in places where high temperatures are common such as a car or next to a heating element. Doing so can result in serious injury and even death.
Must have item!!