Keeper 2 in 5,000 lbs Capacity Trailer Ball - Keeper Performance Engineered Trailer Balls are made of solid steel. This trailer ball has a 2in ball diameter with a 1in shank diameter and a 2in shank length. It is rated as Class III - 5,000 lbs Gross Trailer Weight. Features Chrome Solid Steel Class 3 5000 lbs. Gross Trailer Weight