This Curt Hitch 2-5/16 inch ball Trailer Hitch Ball has gross trailer weight of 20, 000 pounds and is made of steel. Specifications•Gross Trailer Weight (LB):20000 Pound•Ball Diameter (IN):2-5/16 Inch•Shank Diameter (IN):1 Inch•Shank Length (IN):2-3/4 Inch•Color: Silver•Material: Steel•Finish: Chrome Plated 1-1/4 Inch Shank Diameter x 2 3/4 Inch Shank Length x 0 Inch Rise Chrome Steel | Curt Trailer Hitch Ball, 2-5/16 inch, 20,000 lb GTW