Discount Ramps Triple Ball Trailer Hitch (1-7/8" - 2" - 2-5/16") 3 Ball trailer towing hitch for 2" Class III/IV hitch receivers 1-7/8" ball capacity: 3,500/350 GTW/TW 2" ball capacity: 5,000/500 GTW/TW 2-5/16" ball capacity: 7,500/750 GTW/TW Pin hole distance to center of hitch ball is 8.25" with the 2" ball and 6.5" with the 1-7/8" and 2-5/16" hitch balls