1.) Easy to use for testing leakage in radiators by
connecting the pressure tester pump to a test cap
0r adapter onto the radiators
2.) Connectors are to test leaks in the pressure cap
as well as the cap's ability to release pressure
3.) 19 Test caps and adapters encompass a great
variety of sizes that is suitable for universal vehicles.
4.) Test cap number: no. 3-21
5.) A thermometer is included for messuring coolant
temperature for safety resons.