So you activated your airbag, either during a slide or an intoxicated demo for your friends. Either way, now it's time to refill your cylinder with the BCA
Extra Consumer Refill Kit. You'll need this if you travel with an empty cylinder and need to refill it at your destination, too. The kit contains a 5/32" Allen Wrench, toothpick, 5 O-Rings, and grease - enough for five refills.
5 / 32" Allen Wrench
Warning - Wearing an airbag backpack is no guarantee of survival in an avalanche. Backcountry travelers are highly advised to educate themselves in snow stability assessment, route finding, and companion rescue and carry all of the conventional avalanche gear in addition to the airbag.