Heavy-duty pressure test kit. Aluminium radiator header tank caps are colour coded for ease of use and have quick release fittings. Suitable for wide range of vehicle applications.Locate system leaks from: Head gasket. Header tank. Radiator and heater cores. Water pump, plugs, hoses and housings.Heavy-duty pump unit features smooth action and large, easy-to-read, scale. Long hose aids easy use of the gauge and quick release is fitted with pressure release valve for safe operation. Set supplied with thermometer and packed in rugged carry-case.