Amazon.com: CURT 45331 Trailer Hitch Mount with 2-5/16-Inch Ball & Pin, Fits 2-Inch Receiver, 15,000 lbs, 2-In Drop : Automotive
Trailer Valet Blackout Series 8,000 lbs/10,000 lbs Capacity Adjustable Drop Hitch, 2 -in and 2-5/16 -in Ball- 0-4 -in Drop in the Trailer Hitch Ball Mounts department at Lowes.com
B&W Tow and Stow Ball Mount-Dual Ball (2" & 2 5/16") - Pine Hill