This is an open box item - guaranteed to be brand new with all parts present.Retail price on Amazon was last reported as $153.59.Ships in the original manufacturer's packaging.Ciibo Ivy Stock #: 11794644-AmazonDsp.Services.Objects.Ivy.IvyProducts.IvyProduct+Shelving--------------------------------View on AmazonMain Function: This gooseneck kingpin adapter changes your gooseneck trailer to 5th wheel trailer,fifth wheel to gooseneck coupler is mainly used for semi-tractor trailer or fifth wheel gooseneck towing trailer hooked to a pickup truck.Easy Switching: 18\' long extra-large wall tubing,OEM-compliant extra-heavy duty gooseneck trailer coupler tubing,requires no complexity,just a change of fittings and main pins for easy switching.Reliable Carriage: The 5th wheel gooseneck adapter passes the professional carrying capacity test,with a carrying capacity of 30,000 lbs,bringing you a safer driving experience.Quality Material: The 5th round to gooseneck adapter poop surface is protected by black powder coating, which can effectively avoid rusting,one-piece processing, even force and hard enough to ensure that the product can be used in harsh environments.Standard Size:2\' SAE main pin meets industry standards for all over-the-road applications.Standard King-Pin fitted to 4\' round or 4\' to 4-1/2\' square.No Offset,Fits 4in Round Tube,Inner Tube only,Use to convert a gooseneck trailer to a 5th wheel trailer.