Radiator Pressure Tester: Special design of vacuum purge and refill tool connection allows easy testing for leakage in radiator system and quick change of coolant.The coolant pressure tester kit includes leak detection, temperature measurement and coolant filling functions.The radiator pressure tester pressurizes the reservoir/cap and observes whether the pointer decreases over time to confirm system leakage.Package List: 1 x Radiator manual pressure tester(0-35psi/0-2.5 bar)1 x Pneumatic vacuum coolant refiller(-30 to 0inHg/ -76 to 0cmHg)1 x 19" Rubber nylon resin hose1 x Thermometer(32 - 400℉)3 x Radiator cap test adapters1 x Universal tapered rubber adapter17 x Adapters1 x Adapter handle2 x Connectors1 x Storage case.Premium Quality: Our radiator pressure tester kit for coolant system is made of high-quality brass with good sealing performance and corrosion resistance.19" Rubber nylon resin hose with anti-corrosion, low fluid resistance, high bearing pressure, ensuring durability and good airtightness.The storage case can fix all of the tool and protect the meter during storage.Easy to Operate: 1.Use a stainless steel thermometer with index range 0 to 200℃ (32 to 400℉) to measure the tank temperature.2.Attach a suitable adapter and install it in the tank, increase the pressure with a hand pump until it reaches 15-20psi.3.Check the pressure gauge reading at this point.If the needle goes down, may be a leak in the cooling system.4.Use a pneumatic vacuum refiller to pump the cooling system using workshop air to create a vacuum, then pump the coolant into the system.Universal Radiator Pressure Tester: The coolant pressure tester kit equipped with 17 test caps for testing cooling systems on most domestic and import vehicles, color coded radiator test caps aid with identifying which cap is needed for each application, so it’s easy for you to choose the suitable test cap for the job without messy. Compatible With VW, BMW, Ford, Opel, Audi, etc.