Pressure pump to test leaks in cooling system Provided with 3 twist-on type and 16 threaded type adapters, covering almost all types of car makes and models on the market Vacuum-type coolant refill tool has large internal passages to allow coolant to be refilled fast Radiator cap test tubes (black and blue) to test if the radiator cap from the car has leaks Coolant hose and drain hose are made of cold-resistant material