Tire Tread Depth Gauge (Patent for Taiwan, USA, China, EuropeUnit) (plastic ABS)
Specification: Measures from 1/32nd to 32/32nds
0 MM to 25 MM /  Battery :3.0V <LR41 * 2>(Battery :LR41 )
That can warning the tire tread depth is not enough to
keep using this tire and you’ll hear the “Beep” and LED
will light, so you can easy to know the tire tread depth is
good or not.