TOPTOW Adjustable Trailer Hitch with Dual Ball 2" & 2-5/16", 6-1/2" Drop/Riser | eBay
Amazon.com: Hyper Hitches Adjustable Trailer Hitch, Fits 2.5 Inch Receiver, Adjustable Drop/Rise, Includes 2-Inch and 2 5/16-Inch Dual-Ball Hitch, Up to 25,000 GTW, Made in The USA (5" Drop) : Automotive
1-7/8" and 2" Double Ball Hitch Mount
Buyers Products Company 1-7/8 in. and 2 in. Towing Ball Mount with Dual Balls in Black 1803210 - The Home Depot