Like new Gooseneck trailer extension.  Used for all of maybe 125 miles before selling the trailer. 

PopUp Extended Coupler gives you an additional sixteen inches clearance between the truck cab and the trailer nose, and between the truck tailgate and the trailer bulkhead. This gives you more trailer swing and more room for hook-up.  To make your towing experience better yet, this extended coupler is fitted with a PopUp GN8 self-latching coupler.  Great use for short bed trucks with square nosed trailers.

Fits trailers with 4 1/2″ ID square tube

16 Inch offset between truck and trailer.

Fits standard trailer coupler tubes.

Self-latching GN8 2-5/16″ coupler.

Precision coupler casting extends life of ball.

24,000 lbs. Gross Trailer Weight.

Extra heavy wall tube for maximum strength.

Includes coupler release cable and hardware.

1″ holes thru both sides

$400 OBO or trade for?  Or trade for a shocker air ride Gooseneck coupler in the 4.5" square tube size plus cash.