The AKS 3004 effectively suppresses any snaking movements of the caravan/trailer by the use of 4 special friction pads which surround the tow ball. Improves towing stability and ensures perfect driving dynamics; Provides excellent ride comfort and optimum road safety; Easy to use - simple one handed lever action; Light and compact design weighing 3.9kg; Built for long life and resistant to corrosion; Coupling mechanism and friction pad wear indicators; Maximum capacity 3000kg. Kit includes UK towball. Security devices are available seperately.