B&W Trailer Hitches Ball- 2-5/16 X 1-1/2 X 2-3/4 Model HB94005B&W Trailer Hitches Ball 2 5 16 X 1 1 2 X 2 3 4 Model HB94005 Your vehicle's ball mount is nothing without a trailer hitch ball in it! Once bolted in, a hitch ball creates a perfect pivot and attachment point for your trailer's coupler. We machine the hitch balls from carbon steel then heat treat them for maximu m hardness. You can choose from our wide selection to get exactly what you need. Hitch ball provides connection point for your trailer's