9V Brake Fluid Tester Brake Oil Detector Highly Sensitive Probe For DOT3/T4/T5.1

3 LED lights display the selected brake fluid type. It is designed for checking the health of DOT-3, DOT-4, DOT-5.1 brake fluids and most synthetic brake fluids. Install one pcs of 9V(6F22) battery at the back of tester.

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