Precision tools are CNC machined. These high-end tools are explicitly designed to correct standard manufacturing imperfections of mass-produced automobile bodies, axles, and wheels to tune a racer for optimum performance and speed. Precisely bend the axes to force straight tracking. Adjust the direction by bending the axis 1.5 or 2.5. Use it to track the car straight or to apply lane driving method. Must be used with the Shaft Shaper.