To equip your vehicle with a full Sway Control System a mounting point for the sway control bar must be attached to the hitch. With the BulletProof Sway Control Ball Mount, you can mount a sway control system between your hitch and your trailer. Most useful in reducing sway on large, heavy loads. The sway control ball mount comes with a 2" and 2-5/16" combination ball and two side plates for mounting the sway control ball, allowing you to attach the sway control system to either side of the trailer. Typically, this setup would only have one side plate for mounting, which may not work for some applications. Having two ball sizes and mounting plates means the user can easily switch trailers and even change which side they would like to mount the sway control system on. This is especially important for trailers that have designs that can interfere with the articulation of the sway control system. The Heavy/Extreme Duty Sway Ball Mount is made to be compatible with any of our Heavy or Extreme Duty hitches. The entire ball mount comes coated with our durable black textured powder coat and is covered by a lifetime warranty! If you are ordering this ball mount with a Heavy or Extreme Duty BulletProof Hitch, you can replace the standard dual ball that comes with our hitches for this Sway Control Ball Mount for just an additional $74.95 *PATENT PENDING