About Labwork： Labwork is an Auto Parts One-Stop Solution brand of more than 10 years, which specializes in providing global customers with top-notched quality automotive parts & accessories . If you need any auto parts, its enough to come to Labwork. Features: High quality and brand new. Universal radiator pressure tester and vacuum type cooling system kit Allows easy testing for leakage in radiator system and quick change of coolant Color coded radiator test cap makes it easy to choose the suitable test cap for the job Special design of vacuum purge & refill tool connection Test Range 0 – 35 psi, suitable for domestic and import vehicles .