This great tool 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 tracking and handling while minimizing alignment headaches. Includes gauge and wheel mount (fits most wheels from 17 to 22). Displays Camber - 4degCaster - 4deg to 12deg. Saves time and tires. Optional Toe Adapter kit 91100 sold seperatly. California Residents WARNING