Towever 84188 Trailer Hitch Dual-Ball Mount (1-7/8" & 2" Balls, Black) for 2" Hitch Receiver Heavy duty towing ball mount fits all 2" class III/IV hitch receiver Includes Two interchangeable welded hitch Balls (1-7/8 inches & 2 inches) to meet different demand without taking off the balls. Trailer ball capacity for each: 1-7/8" Ball - 2,000 lbs; 2" Ball - 5,000 lbs 7-3/4 inches hollow shank for usable length Use 5/8 Inch Hitch Pin Kit or Lock to secure hitch setups