4IN SQUARE GOOSENECK TRAILER W/5TH WHEEL TRUCK ADAPTOR

The GN7 Square Straight Kingpin Coupler by Popup Hitch ensures a secure, reliable connection for heavy-duty applications. It is designed for trailers with 4″ ID square tubes. The part measures 4″ outside to outside. It allows a gooseneck trailer to be pulled with a semi-tractor or a pickup mounted fifth wheel by replacing the coupler with a king pin. It is easily switchable. The 2″ SAE king pins are industry standard and suitable for all over-the-road applications. It has a durable black powder coat finish, is rated at 30,000 lbs, and features a standard S.A.E. king-pin with a 10″ round bolster plate fitted to an 18″ long square or round tube. It fits standard gooseneck trailer coupler tubes and has 1″ holes through both sides. Made in America.