This innovative design combines the hitch plate, rocker arm and crossmember into the SuperLite King Pin Adapter, which clamps to the trailers king pin and mounts an upside-down ball into a coupler tube, similar to an upside down gooseneck hitch. Simply aim the ball over any part of the funnel at the top of the coupler tube to guide the ball into the tube. Because the ball and the coupler funnel are completely visible from the drivers seat, SuperLite is absolutely the easiest fifth wheel hitch to couple in the industry, and the lightest at only 52 lbs. Plus the tighter connection provides a smoother ride. Mounts with no tools in truck bed to any brand of industry standard rails. Gooseneck/horse trailer adapter available (sold separately). Made in USA. | Pull Rite 2400 SuperLite 5th Wheel Hitch for ISR Series Rails, 20K Made in USA