If you already have the Andersen WD Hitch, but need to hook up to more than one trailer, the Andersen Hitches WD Trailer Kit for Extra Trailers makes it easy to move your WD Hitch from trailer to trailer. Instead of having to completely disassemble your WD Hitch to move it from trailer to trailer, simply install a WD Trailer Kit on all of your extra trailers, and you'll be able to quickly and easily move from trailer to trailer with your WD Hitch.• Works with all Andersen Weight Distribution Hitches• Includes all mounting hardware• 3" / 4" / 5 / 6" bracketsNOTE: Requires previous purchase of a complete Andersen WD Kit. Works with all Andersen Weight Distribution Hitches Includes all mounting hardware 3"" / 4"" / 5"" / 6"" brackets | Andersen Hitches WD Trailer Kit for Extra Trailers, 3"/4"/5"/6" Brackets