Wheel-Checks are a loose wheel-nut indicator that can identify a loose wheel nut with a simple visual inspection. When the wheel nuts are properly torqued to specs, the Wheel-Checks are then placed on the wheel nuts in a uniformed pattern. Once a wheel-nut has loosened, the Wheel-Check will become out of sequence. It will be visible when the driver does his or her walk around. Wheel-Check’s can also quickly identify a hot wheel possibly caused by bearing failure or brake drag. Wheel-Check is a simple and effective product.