Trailer Hitch Ball Vehicle Class IV Ball Diameter 2 5/16 in Gross Towing Weight Capacity 10 000 lb Gross Vehicle Weight Capacity 10 000 lb Material Steel Finish Chrome Features 1 Year Limited Warranty Designed for Heavy Duty Towing and to be Used With Standard Heavy Duty Ball Mounts Two Wrench Flats Ball Type Standard Color Silver Resistance Properties Corrosion-Resistant Shank Diameter 1 1/4 in Shank Length 2 1/8 in Standards SAE J-684