Torklift E1636 - Cannon Weight Distribution Receiver Extension 36"The Cannon is the only trailer receiver hitch extension manufactured specifically for 3 inch factory receivers and is perfect for a truck camper or anything else that creates overhang or the need for an extension. The Cannon utilizes the SuperTruss patented lateral support safety chains and an all new built in set bolt system that prevents extension and receiver movement while towing. Lengths for this trailer receiver extension are 36, 42 and 48. The