It has a standard 2-1/2-inch x 2-1/2-inch shank.
At the core of this heavy-duty ball hitch is a cushion isolator that resists jerking, jarring, bumps, vibrations, chucking and rattling noise at the coupling point. For dependable towing strength, the Rebellion XD cushion hitch ball mount is tested and rated for 10,000 pounds for the 2-inch ball and 20,000 pounds for the 2-5/16-inch ball (limited to lowest-rated towing component). Rebellion XD ADJ Cushion Hitch 2-1/2" Shank 2", 2-5/16" Balls, 20K lbs The result is a more comfortable drive, increased driver control and better management of the vehicle-trailer combination in events of sudden braking.