For Sale brand new Model 3200 Andersen Ultimate Connection 5th Wheel Trailer Hitch System with Adapter - 20,000 lbs It fits industry standard rails. I bought this last fall and used it twice. I had engine problems with my truck and traded it in on a new one. My new truck doesn't use the same rails in the bed so I am not using it still have the box it came in along with install instructions. I purchased it from etrailer along with the safety chain kit. See links below. $400.00 takes both. Links to etrailer Andersen Ultimate hitch https://www.etrailer.com/Fifth-Wheel/Andersen/AM3200.