Any snaking and gaping movements of the towed vehicle are effectively prevented. Relaxed, easy driving with the car and trailer combination. A higher theoretical maximum speed (observe maximum permissible speed). In an emergency situation, the car/trailer combination can be brought under control faster. All with one hand. Coupler grip and stabilization grip are separeted and can be operated each with one hand. No circumstantial additional protection. For an easier rank of your trailer, just open the stabilization grip. By operating the stabilizer grip, two special friction pads are pressed onto the towing ball of the car on the left and right side. Snaking or gaping movements are thus effectively prevented from the outset. Approval of the attachment: the AKS does not have to be entered in the trailer documents. Retrofittable. Optional anti theft advice: AL-KO U-lock.