1-3/4 Trailer Hitch Ball
Choosing a 1-3/4 trailer hitch ball means matching the ball diameter to the trailer coupler socket, not simply grabbing the largest size available. A ball that is too large will not seat, while one that is too small creates dangerous slack. The total load also matters: the ball, ball mount, receiver, vehicle hitch, and trailer all contribute to a towing configuration that must respect weight ratings. For buyers, the practical goal is a correctly sized shank, enough capacity, and a compatible mounting platform before loading a trailer.
The direct answer
A 1-3/4 trailer hitch ball fits a trailer coupler whose socket is stamped or labeled for a 1-3/4 inch ball diameter. The label may appear as 1 3/4 trailer hitch ball, 1-3/4 inch, or a similar variation, but the critical check is the coupler marking. If the coupler accepts this intermediate size, use exactly that ball; substituting a 2 inch or 1-7/8 inch ball can prevent proper latching or allow excessive movement.
The ball must also have a shank diameter and length that fit the ball mount hole, and its individual capacity should meet or exceed the loaded trailer demand. That demand includes the trailer weight and the portion carried on the hitch, or tongue weight. The ball is one link in the towing system, so the vehicle, receiver, ball mount, and trailer must be evaluated together rather than selecting parts by ball size alone.