A unique interlocking designed system, enables one wrench to tighten on bROK and hex recess ball mounts. Oversized platform base for improved support over traditional hitch balls. Backward and forward integration with bROK, hex, standard and heavy-duty forged ball mounts. bROK premium Towing and Trailering products are fostered by American engineering and ingenuity to provide you with the means of success in your challenging travels. bROK's highly engineered products give you the confidence needed to take on tough, demanding challenges. Whether cross county or across the farm, bROK brings powerful reliability and trustworthiness from the professional who demand performance. bROK is a partner with you, traveling with you and succeeding with you.