Wheel-Check is a loose wheel-nut indicator that can identify a loose wheel nut with a simple visual inspection. Wheel-Checks are applied when the wheel nuts are properly torqued to specs. As the wheel-nut loosens, the Wheel-Check will become out of sequence and visible to the driver during inspection. Wheel Checks provide a simple, visual means of confirming proper wheel torque, helping lower maintenance costs and facilitate official roadside inspections, the company says. Wheel-Check is available in 17 sizes, with custom sizes and colors available upon request.