The BAJA Collection Class III Steel Trailer Hitch Ball fits directly into your trailer coupler and helps create a secure connection between your vehicle and trailer when towing your valuable cargo. The hitch ball provides universally designed wrench flats that can be used with any standard ball mount and also fit into the X-Mount lockrail system. The lockrail functions as a built-in wrench, preventing hitch ball rotation during installation or removal. Includes locking washer, mounting nut and wrench flats. Make sure to know the total weight of the trailer (GTW) you are towing and the maximum towing capacity determined by your vehicle manufacturer to select the correct Class. Made of durable, heavy-duty construction with a chrome plated finish that is corrosion-resistant to withstand extreme weather.