Spare blowout discs for your DDKit.
* Stiff Mylar material breaks cleanly
* Works with propane and HFC134a
* Comes in handy plastic bag that is too small for your kid brother to fit over his head. Caution: mushed up bag may represent a choking hazard. Keep out of small children.
* Elementary school teachers: DDKit stickers can also be used as apathy "smiley face" stickers for rewarding B- assignments.
What else can we say? They're boring plastic stickers that are clear and go BANG when you apply pressurized gas to them