Features: Small and light to carry for more convenience. Designed- for checking the quality of brake fluid quality simply. Digital measuring provide quick and easy ways to test the presence- of water in the brake fluid, specially developed for car users & garage mechanics. Provide professional and comprehensive auto repair tools and services in the auto repair industry. Suitable for DOT3-/DOT4/DOT5.1. Specifications: Material: ABS- Size: approx 157x27x23mm/6.2x1.1x0.9-inch Moisture detection range: 0%~4%. Accuracy: 0.3%. Water content of brake oil: 0~2%, which can be used normally. Water content of brake oil: less than 2.5%, still usable. Water content of brake oil: more than 3%, replacement required. Operating ambient temperature: 0 ~40 . Alarm mode: audible- and visual alarm. Probe format: oval-. Backlight: red & green backlight Note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Brake Fluid Tester