Arctic Freeze Ultra Synthetic Automotive Refrigerant 134A offers a convenient synthetic refrigerant kit that makes it simple to recharge your vehicle's air conditioning system. Formulated with Cool Boost technology, this auto refrigerant 134A helps the AC system produce colder air to make your car more comfortable. AC leak sealer helps to seal common AC leaks in the rubber hoses, gaskets and O-rings. This R-134A refrigerant contains a moisture and acid buildup eliminator to extend the life of your AC system. To use this kit, locate the low pressure port, turn on the vehicle and turn the AC to high. Attach the quick connect fitting on the refrigerant dispenser, read the pressure and charge the system. This kit comes with a reusable push button AC recharge hose and gauge for easy use.