Curt Manufacturing 16521 A16 5th Wheel Hitch with Roller Ideal for towing 5th wheel trailers up to 16,000 lbs. R16 5th wheel roller #16560 provides 12" of travel in the truck bed Rolls on wheels and solid, non-binding rods to be a true rolling unit A16 high-strength, interlocking cast jaws fully wrap the kingpin Fully articulating torsion head for controlled coupling and stable towing