DescriptionAre you looking for a professional, yet affordable car air conditioner leak tester? Are you in search of a sturdy, trustworthy tool that can do multiple jobs at once? If yes, look no further Our professional car air conditioner leak tester must meet you needs. It is one of the best choices for you.Features- Color: As shown.- Material: Aluminum alloy and plastic.- Size: About 3 x 3 x 12cm.- Made of material, practical and durable.- Automobile air conditioner leak detection set are complete, with 28 lamp bead flashlight, fluorescent agent, battery set, and fluorescent glasses.- Rapid detection of leakage point and suitable for various air conditioning system leak detection.- Functional principle: After evacuating, add enough fluorescent agent to the air-conditioning system to mix with the frozen oil. Then add snow. When a refrigerant leak occurs at the leak point, the fluorescent agent also leaks. When the blue light shines on the golden yellow phosphor, it will show a bright golden yellow.- Reasons that no fluorescence is displayed, or the display is very faint: 1: No leakage in the system 2: Insufficient fluorescent agent.