Features 1、Function: Designed to measure the tread of different automobile tires, and it is also suitable for the wear measurement of brake shoes and brake pads. 2、Easy Reading: Digital LED large screen, the measurement range is 0‑25.4mm, and the profile depth value can be directly read. 3、Zero Key: The tire gauge can be reset to zero at any position, making it easier to adjust. Supports inch to millimeter conversion. 4、Recommended Replacement: Tire wear limit ≤ 1.6mm, high speed driving wear ≤ 3mm, rain and snow weather driving wear ≤ 4mm. 5、Pre Installed Battery: Smart chip, automatically power off when the gauge is not in use; no need to worry about running out of power. Specification Item Type: Tire Tread Depth Gauge Material: ABS Range: Approx. 0-25.4mm/0-1in Battery Type: 1 x Coin Cell Battery (Included) Battery Model: LR44 Battery Capacity: 150MAH Fitment: Universal Package List 1 x Tire Tread Depth Gauge 1 x Battery