BReese 7031400 Tri-Ball Mount with Hook ReviewbP PP Reese 7031400 Tri-Ball Mount with Hook PHitch ball sizes of 1-78 inches 2 inches and 2-516 inchesPLength of 8 inchesPUp to 200 pounds tongue weight and gross towing weight of 2000 pounds for 1-78 inch hitch ball 600 pounds tongue weight and gross towing weight of 6000 pounds for 2 inch hitch ballPUp to 1000 pounds tongue weight and gross towing weight of 10000 pounds for 2-516 inch hitch ball and 10000 pounds gross towing weight for hookPYou should always consult the vehicles owners manual for maximum towing capacityP