Brake Fluid Tester Pen 5 LED for DOT3 4 5

1 The brake oil detection pen measures the change in moisture of the brake oil based on the change in conductivity. 2 It clearly shows the degree of moisture content through the LED. High water content will cause the boiling point to decrease, affecting the braking performance, and corrosion of the brake master cylinder and the sub-pump, causing rust and seizure. 3 Red light indicates that the brake oil needs to be replaced immediately, green light indicates good condition, and yellow light indicates that the condition is acceptable, but it is about to be replaced. 4 This product can be used by car 4S shop and owner, the product operation is simple, accurate and fast! 5 Suitable for a variety of models, easy to use.

What's in the box
1 x Brake Fluid Tester