Gooseneck Trailer Hitch King Pin; Gooseneck Trailer Hitch Kit; Use With Semi-Tractor or Pickup Mounted Fifth Wheel Hitches and Trailers With 4 Inch ID Square Tube; Fits Standard Gooseneck Trailer Coupler Tubes; 30000 Pound Capacity; 1 Inch Holes

Pull your gooseneck trailer with a semi-tractor or pickup mounted fifth wheel. Simply replace the coupler with a king pin. Easily switch back and forth. 2 Inch SAE king pins are the industry standard and are suitable for use in all over-the-road applications. Features & Benefits For Trailers With 4 Inch ID Round Tube Standard S.A.E. King-Pin With 10 Inch Round Bolster Plate Fitted To 18 Inch Long Square Or Round Tube Durable Black Powder Coat Finish Fits Standard Gooseneck Trailer Coupler Tubes 1 Inch Holes Thru Both Sides