bROK Heavy Duty Zinc 2-5/16" x 1-1/4" x 2-3/4" 17,000LB Hitch Ball. Convenient one wrench to tighten designed base when used on bROK pin stop or recessed hex ball mounts. Works on all flat, pin stop and hex recessed ball mounts. Solid hot forged steel ball and shank for maximum durability. Corrosion resistant heavy duty zinc plating. Nut and lock washer included for optimum retention.