It is a welded one-piece type with cylindrical rib that binds together the upper sections of the right and the left suspensions tightly with the strong steel pipe and plate.  It reduces the distortion of the body applied from the suspension to ensure the movement of the suspension.  As a result, it creates a zippy feeling of driving a car.  All the more because it is part of the basic item, AutoExe sticks to the function-oriented stance.