Electronic pen for checking brake fluid

Brake Fluid Tester with LED Light - AAA Battery Operated

 Easy to Use – Simply insert the device into the brake fluid reservoir for one second, and the result will be displayed instantly via LED lights.

 5 LED Lights – Accurately indicate the moisture content in the brake fluid.

 Compatible with DOT3 and DOT4 brake fluids.

 Operates on AAA battery (1.5V) – Instant and easy power.

 Automatic Shut-off – To conserve battery.