Cushioned 5th wheel to gooseneck 2-5/16" ball adapter. Rated at 20,000 lbs. Cushioned 360 degrees plus up and down. Positive lock coupler. The lock stays where you put it, either locked or unlocked. Has fail safe locking pin. Easily receives padlock to secure trailer when hooked up or parked. Comes complete with fail safe king pin adapter. Also includes bolts and is drilled for an additional bolt-on feature. Comes with safety chains "field installed".Please press "Product Overview" for important Sidewinder Pin Box warning.