Feature 1NECESSITY OF USE: Brake pressure is transmitted by brake fluid. Once there is too much water in the brake fluid, the pressure transmission will fail. In order to drive safety, the water proportion in brake fluid must be tested regularly 2USEFUL AND PRACTICAL: The brake fluid tester can help you carry out daily maintenance to ensure your safe driving 3EXCELLENT DESIGN: The 250mm gooseneck probe provides flexible detection, and the chrome surface is resistant to oil and oxidation; Three LED lights show the selected brake fluid type and six LED lights show the percentage of water in the brake fluid 4HANDY TOOL: Automotive brake fluid tester is small and feels perfect. With the buzzer and red light dual alarm system, the detection results at a glance 5UNIVERSAL MODEL: Brake fluid diagnostic detector works with most vehicles. High accuracy DOT3, DOT4, DOT5.1 brake fluid testItem Type: Automotive Brake Fluid TesterModel: 2GEMaterial: ABS and stainless steelPower Supply Mode: 6F22 9V dry battery 1200mAhFunction: Brake oil moisture detectionDetection Range: DOT3, DOT4, and DOT5.1Prompt: Sound and light alarm .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Automobile Brake Oil Detector1 x User Manual1 x Battery1 x Cleaning Cloth