Ultra-Tow Heavy-Duty Forged Steel Ball Mount - Class IV, 4in. Drop, 17,000Lb. Tow Weight, 8in. Shank Durable, corrosion-resistant heavy-duty forged powder-coat finish Reversible for use with 4in. drop or 3in. rise Accepts any tow ball with 1 1/4in. shank dia. (tow ball and hitch pin sold separately)