The Convert-A-Ball Hitch System is your answer to multi-needed trailerconnections. No more wrenches, no more busted knuckles. Three interchangeableballs (1 7/8″, 2″ and 2 5/16″) fit on the 1″ shank. The 1 7/8″ and 2″ ballswork great on the 3/4″ shank. Contains part numbers 900 and 004 Beats the national standard SAE-J684-E for ball hitches. V-5 rated safe! 3/4″ nickel plated shank for 1 7/8″ and 2″ balls rated 3,500 lbs. 3/4″ nickel plated for 1 7/8″ and 2″ balls rated 5,000 lbs. 1″ nickel plated shank rated 10,000 lbs. Safety hole drilled for cotter pin. Nickel plated slide pin with shear strength of 21,000 lbs