Model #3220 TBX. All aluminum. Base only weighs #35 lbs. so can easily be removed from pickup by one person. Attaches to gooseneck ball. Will work in short bed pickups that have a toolbox or bed mounted fuel tank. Does not require grease so no mess. Does not void fifth wheel warranty. Rated at 24,000 GTWR and 4,500 lb tongue weight. Has adjustment to move trailer forward or backwards as well as three different height settings. Barely used, excellent condition. Was over $800.00 new.