Description:Function:ed to trailer fifth wheel.Feature:2 inch King needle, 2-5 / 16 inch ballMaterial:The material is solid steel structure, which is thicker and stronger than ordinary materials, which can increase the service life of the productInstallation:You may need to adjt the main column of the gooseneck trailer to allow the trailer to travel horizontally.Condition:100% Brand NewFitment??Can be ed for tractor trailer fifth wheelPackage Include??Show in the picture