The Carpoint Auxiliary coupling clamp enables you to transport your trailer or caravan safely. This Carpoint secondary coupling can be fitted to every round towbar that has a nut and bolt fitting. Loop the trailer brake and breakaway cable through the secondary coupling slots. Should the trailer or caravan break away from the car towbar, the brake and breakaway cable ensures that the trailer or caravan brakes. The secondary coupling also ensures that the trailer or caravan does not shoot off in different directions.