1.) For checking leaks in the radiator, particularly
designed for Japanese cars and some European
and American cars as well.
2.) Connect the test caps to radiator 0r recovery tank
in check leaks in the radiator.
3.) Two connectors (black and blue) are included for
checking if there are leaks in the original pressure
cap and its ability to release pressure when the it
exceeds the cap's high limit as indicated on surface
of the pressure cap.