ITEM NAME:Car Brake Fluid Tester Pen For Water Miosture Compact Tool Indicator DOT 3 / 4 ^.1 x Brake Tester. Green: 0% Water. Battery OK, no water contained in the brake. Yellow/Yellow/Red: 3% of Water. The brake should be changed. Yellow/Yellow/Red/Red: At least 4% of Water. The brake must be changed urgently.
