Curt Manufacturing 16120 Trailer Hitch Converts CURT Double Lock gooseneck hitches to industry-standard 5th wheel rails Round shank style fits CURT #60607, #60615, #60620 and #60625 gooseneck hitches Not compatible with OEM puck system, single-pin or square shank gooseneck hitches It has a gross trailer weight capacity of 16,000 pounds and can handle a vertical load up to 4,000 pounds Capacity limited to lowest-rated towing component. Three-position coupling indicator clearly shows coupling status