Strobe Wheel Balancers have been around for years, and there is no more accurate way to balance a tire and wheel assembly than on the vehicle. When balancing a tire and wheel assembly on the vehicle you are also balancing the rotor or drum and hub assembly which insures a better balance. Strobe balancing a wheel and tire is more accurate than using conventional methods. The Amermac 501A Electronic Strobe Balancer is the companion component to the 525 Wheel Spinner. The 501-A Electronic Strobe Balancer delivers fast precision balancing on the vehicle. No special wheel attachments are required. The flashing strobe indicator pin points exact placement of wheel weights. Balancing jobs go out faster…….you profit more!