This water tank leak detector is easy to operate and convenient to store and carry, which can assist you to find internal and external leaks in car cooling system. Function This coolant pressure tester kit allows you to change coolant and test for leaks in your vehicles cooling system, including the radiator, heater core and radiator cap, in a simple and straightforward manner Materials Made of stainless steel, plastic and copper, high strength and toughness, providing higher stability and longer service life Note If the temperature is too high, you may get scalded. Before you open it, make sure the tank is cool when you use it. Widely compatible with various brands of cars please refer to the pictures below for specific car models Easy to Use Removal the original radiator cap, select an available radiator cap from the test kit, and install it on the radiator port. Operate the hand pump until the pressure reaches 1015psi avoid reaching 35psi. Check the pressure gauge reading Packing List 1 piece pressure test pump with pressure gauge; 1piece thermometer; 4 pieces chrome plated steel cap adapters; 8 pieces anodized cap adapters; 1 piece adapter handle; 1 piece carrying case