Curt Manufacturing 16520 A16 5th Wheel Hitch Head Designed to mount on the R16 roller #16560 for towing 16,000-lb. 5th wheels High-strength, interlocking cast jaws fully wrap the kingpin Fully articulating torsion head for controlled coupling and stable towing Cast yoke, with poly-torsion inserts, suppresses shock loads and reduces noise Lockable handle self-resets to the ready-to-couple position after uncoupling