Top Tech Gadgets - Cool Tech Cheap

Accurate Oil Quality Check Pen is based on the change in conductivity to determine the moisture change brake fluid. It shows clearly the extent of moisture contained by the light-emitting diode, high moisture content will lead to lower boiling point, affect braking performance. Red indicates the brake fluid needs immediate replacement, green represents good condition; yellow indicates the state is acceptable but soon replaced. Learn more about Top Tech Gadgets

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