1. Enhance the safety of vehicles. It can effectively detect and prevent the loosening of tire screw, avoid the vicious accidents such as tire falling off and vehicle damage caused by the loosening of tire screw.

2. Reduce the driver's working intensity and improve the efficiency of vehicle inspection. A simple look at the condition of the tire screw can tell whether it is normal or loose, which reduces the driver's work intensity and improves efficiency.

Based on the traffic accidents of many transport vehicles, many of them are caused by the loosening of wheel nuts, so this simple safety product has been designed, which has become popular on foreign trucks.