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Brake Fluid Liquid Oil Moisture Tester Pen Car Testing Tool For DOT3 DOT4 DOT5.1

$7.98

Function Switch Key: After starting, press S key to switch to DOT3/DOT4/DOT5.1, and press S button to switch the brake oil type (default is DOT3). Energy saving and low power consumption. The back is designed with a portable pen clip for easy carrying.