6pcs Brake Fluid Tester Pen Automotive Diagnostic Tool Vehicle Liquid Tester with 5 LED Mini Indicator Compatible with PC & Mac

Compatible with PC & Mac computers– no drivers needed

ATTENTION:

Come with 2 USB ports

Do NOT shoot the laser beam into people's eyes

6pcs Brake Fluid Tester Pen Automotive Diagnostic Tool Vehicle Liquid Tester with 5 LED Mini Indicator Compatible with PC & MacProduct Features: Operation Guideline: 1. Unscrew the brake fluid reservoir, and pull off the cap of the Brake fluid tester pen. Dip the test probes into the brake fluid up to the plastic rim of the device. 2. Press the button for power on, green LED will light up. Insert the tester into reservoir for one second then the tester result will be correctly indicated by LEDs. Repress the button for power off. The tester will automatically power off after