Do you know the hidden dangers of brake oil? Unqualified brake oil will cause brake failure, rear-end collision, traffic accident and so on. It is necessary to check the car brake oil quality with the Brake Fluid Tester Pen. You can know the quality of the brake oil directly through the LED lights. Drive safely!
● Check the car brake oil quality with the brake fluid tester pen
● LED lights to show the water content of brake oil
● Accurate measurement and low power consumption
● Powered by 1 x AAA battery ( not include )
● If the green LED light does not light up after you pressing the power button, please replace the battery
● Please do not expose the brake fluid in the air for a long time, because it has a strong water absorption