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

Testing DOT 3, DOT4, DOT5 brake fluid. A Brake Fluid Liquid Tester Pen. Tester Features Five LED indicators show the test results more accurate. Press the switch to turn on the power, the green LED light that represents the battery properly, the green light does not shine on behalf To replace the battery.

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