PopUp 4" Square Straight Coupler with King Pin • GN7

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.

• 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
• Limited Lifetime Warranty