Designed for the Professional Tower who uses both 5th wheel and gooseneck trailers. Utilizes the same under bed ?puck? system of Signature Series rail kits. Uses wider platform/mounting footprint for increased stability. Hitch can be removed for unobstructed use of the bed. 2-5/16" forged, heat treated ball. Built in chain bracket for safety chain. Note: will not fit beds shorter than 6 ft. in length.