Reese Tri Ball Mount, 1 7 8, 2, And 2 5 16 In 21512 | Zoro Tri Ball Mount, Ball Mount Style Ball Mounts with Hitch Ball, Vehicle Class IV, Compatible Ball Diameter 1 7 8 in, 2 in, 2 5 16 in, Compatible Ball Shank Diameter Not Applicable, Compatible Hitch Size 2 in, Gross Vehicle Weight Capacity 10,000 lb, Pin Hole to Hitch Ball Distance 8 in, Material Steel, Finish Powder Coated, Includes 1 7 8 in Ball