Tow Ready Reese 63908 Packaged Class IV Hitch Ball, Chrome - 2-5/16" Ball x 1" x 2-1/8", 7,500 lbs. Solid steel hitch balls engineered to meet all safety requirements of VESC regulation V-5 Cold forged for superior strength Ball Size: 2-5/16" Shank Diameter: 1"; Shank Length: 2-1/8" Rating: 7,500 GTW