Universal Cooling System Radiator Pressure Tester Kit Leak Detector Refill KitApplication Designed to tester the radiator for most of vehicles, Easily test the leakage in radiator system and quick change of coolant. It has 2 pressure gauges for proper leakage test and accurate results. And there are different color coded radiator test caps, you can easily choose the test cap that suits your work. It will be a good helper in your daily life. Feature Helps find internal and external leaks in your cooling system Cooling System