Bit surprised I wasn't able to find an easy answer to this on the googles.

Is there a right choice of RHS for making hitch receivers? Obviously I could just go and find the best fit on the rack, but I wondered if there's a specific (eg US) size/profile/grade that they use.

I have a couple of spare tongues and a winch box knocking around, that all appear to use 50mm square hollow section. I want to make up a couple of receivers (tractor, trailer etc) for general convenience moving stuff around the farm.


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