Brake Fluid Liquid Tester Pen With 5 LED Vehicle Diagnostic Tool For DOT3/DOT4

Testing DOT 3, DOT4, DOT5 brake fluid. MUCAR Auto Digital Brake Fluid Liquid Tester Pen Car Oil Testing Detector Tool. Tester Instructions Tester Features 1, the green LED lights = water content in the brake fluid H2O <1.5%, brake fluid qualified.

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