The ReCurve R3 weight distribution hitch distributes the weight of your trailer evenly across the axles of the tow vehicle and provides as much sway control as you choose. With one-bolt adjustable sway control, simply adjust the clamp to exert control on the trailer. Turn the sway control completely off in dangerous or icy road conditions. Top-loading spring bars give it more ground clearance than other hitches. Streamlined design makes the hitch and the trailer move as one. Hitch ball included. Thumbscrew makes it easier to set proper head angle of hitch Disengage sway control for easier hookup & safer towing in dangerous road conditions | Eaz-Lift ReCurve R3 6K Weight Distribution Hitch, 2" Ball