This ground shaft is used to checking the lower a arm bushings for alignment along with the squareness of the lower a arm chassis points. If everything is correct you will be able to slide the shaft though the chassis holes and the bushings in the lower a arms. Includes 2 shafts and works very well with our Set Up Plates, Caster Camber and Plumb Bob kits to find your true wheel placement in your race car.
