Reese Class III/IV Forged Ball Mount 4 Inch Drop, 21331 Class III/IV; Forged Ball Mount; 12000 lb. GTW/1200 lb. Tongue Weight; 2 in. Receiver; 1.25 in. Ball Hole; 9.25 in. Length; 4 in. Drop; 3 in. Rise; Black Finish Reese Reese Class III/IV Forged Ball Mount (Black) - 21331 21331 Trailer Hitch Ball Mount