I ran a 10' piece of 2" conduit between my bench vice and a roller stand (for catching boards off a table saw or the like) and was able to spray all four wheels inside and out, spinning when needed as well as positioning for room to move.
It made 3 coats or epoxy primer and 2 coats of SS easy peasy.
And the conduit is still hiding above my garage door waiting for another project.
