Trailer Hitch Ball Sizes - bullyusa.com
2018-1-2u2002·u2002Most trailers have a hitch ball size and maximum towing capacity stamped on the tongue, coupler handle, or frame, and you have to choose a trailer ball with the specs that are equal to or exceed those figures. Commonly used hitch ball sizes (diameters) are: 1-7/8', 2', and 2-5/16'.
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