1Function: This leak detector helps you find internal and external leaks in your cooling system, and works consistently and efficiently. 2Application: The tester is the tool needed to provide cooling system leak testing and coolant filling for the automotive enthusiast or auto repair professional. 3Compatibility: Equipped with various types of connectors, and suitable for most vehicles, also has an extremely wide range of applications. 4Detail Features: The adapters marked with different colors help you to quickly identify the adapters required for each vehicle and save time in selecting adapters. 5Material: Radiator pressure leak tester is made of metal alloy and Abs, it is highly reliable, reusable and easy to store for next use.