This great too is a must for your garage and can't be beat at the track. Portable, hands - free alignment can be done quickly and easily with the FasTrax Adjustable CamberCaster Gauge. This tool will help you fine tune your alignment for optimal trackingand handling while minimizing alignment headaches. Includes gauge and wheel mount (fits most wheels from 13 to 17). Displays Camber - 4deg and Caster - 4deg to 12deg. Saves time and tires. Optional Toe Adapter kit 91100 sold seperatly. California Residents WARNING