[High Quality Materials]The radiator pressure tester is made of high-quality aluminum alloy, rubber, and nylon, which has better sealing performance, higher strength, and good toughness, providing higher stability to extend service life, and has better vacuum effect. [Function] The radiator pressure tester helps to detect internal and external leaks. It is very suitable for detecting cylinder head gasket faults on which side or cylinder of the cylinder block is leaking. The manual pump leak detection tool pressurizes the reservoir and observes whether the pointer decreases over time to confirm system leakage. [Easy to Use] Remove the original radiator cap, select an available radiator cap from the test kit, and install it on the radiator opening. Operate the hand pump until the pressure reaches 10-15psi (avoid reaching 35psi). Check the instrument reading. If the reading automatically decreases, it indicates that the radiator may be leaking. Please check the radiator system and repair it if necessary. Normally, testing for leaks takes about 10 minutes and the operation is very simple and fast. [Easy to Store and Carry] Radiator test kit Pressure coolant pressure tester Vacuum cooling system kit uses a thick blow molding toolbox to keep all tools in place, avoiding damage even under bumpy conditions, clean and stable. It also facilitates transportation, storage, and rapid identification. [Widely Applicable] The cooling system pressure test kit is suitable for cars, trucks, motorcycles, ATVs, air freight, etc.