The definitive tool for 4 wheel Toe alignment kit. Square up and align your race car with the centerline of your car. SmartStrings allow you to simultaneously align and "square" the car, that is, insure that the rear axle is running true and parallel to the front axle. Used in conjunction with HUBStands, a Smart Camber gauge and scales to measure individual toe at each hub, total toe, thrust, wheel base, camber, height and corner weights; all together and all with the wheels off and out of the way.