This great too is a must for your garage and cant be beat at the track. Portable, hands-free alignment can be done quickly and easily with the FasTrax Adjustable Camber/Caster Gauge. This tool will help you fine tune your alignment for optimal tracking and handling while minimizing alignment headaches. Includes gauge and wheel mount (fits most wheels from 13" to 18"). Displays Camber +/-4° and Caster -4° to +12°. Saves time and tires.