1 suitable for various kinds of vacuum tire 2 only 2 minutes are required to complete the tire without the jack tool, simple and quick. 3 can mend a puncture with in 6mm diameters and inflate for tire. 4 ill not cause corrosion to the rims and tire 5 combine the dual function of cooling and extinguishing fire, can be used as an emergency fire extinguisher. 6 without ecological toxicity raw material, inhalator propellant is refrigerant eco-friendly and not damaging the ozone layer