Features: 1.Excellent material selection, fine workmanship,good working performance. 2.Lightweight and compact, long service life and durable. 3.Removable battery, easy to disassemble low-power battery. 4.Metal probe, fine workmanship, sturdy and durable, clear scale, intuitive data display, easier to distinguish. 5.Pushing outward, the probe is extended, pushed in, the probe shrinks. Specification: Item Type:Tyre Thread Depth Gauge Material:Alloy Color:White/Blue/Black(Optional) Condition:100% New Instructions: NO.1-Check the switch key to check if the display is normal NO.2-Return to zero, press the measuring surface close to the flat plane and push the measuring rod to the end. Press ZREO to clear the key to display 0.00. NO.3-Adjust the measuring surface vertically to the tire tread of the car, and insert the measuring rod into the bottom of the groove to display the measured value. Tips: It is recommended to take an average of several measurements. PackageList: 1 x Tyre Depth Gauge1 x Battery Note: Tire maintenance replacement requirements: The tire wear limit value 1.6mm, it is recommended to replace Frequent high-speed driving wear 3mm, it is recommended to replace Frequent rain and snow weather driving wear 4mm, it is recommended to replace It is recommended to take the average several times.