Brake Fluid Tester Pen

• AVOID UNNECESSARY TROUBLES: Test the car brake fluid quality quickly to check whether it’s qualified. It can remind you to change the brake fluid when necessary to avoid a traffic accident. The brake fluid tester is made of a high-precise metal material, durable.
• RESULTS APPEAR IN SECONDS: The brake test strips only take seconds to know the results. LED light indicator that shows the percentage of water in the brake fluid. 1 x AAA /1.5V battery required to operate. It shuts off automatically after 12 seconds.
• INSPECT BRAKE FLUID: This brake fluid tester determines the quality of brake fluid and measures moisture from 0%-4%. Calibrated for cars using DOT3 DOT4 DOT5 brake fluid. Lightweight, portable and easy to use.