KingPin Stabilizer for Goose Neck Tri Pod Stabilizing Jack provides full side to side frame overhang stability and added front to rear stability. This jack sets up in seconds. It is simple to operate the foldable drive screw handles which fold down for activating the jack and fold up when not in use or for storage. It is made of heavy duty construction yet lightweight and easy to store. It includes large diameter base pads with heavy duty chain and hooks. Gooseneck adapter included.