For shipping, this roller comes in sections. It's easy to assemble, but the extruded profiles have such a sloppy fit that the sections rattle around inside each other, strip the puny screws provided to hold the sections together, and the roller bends and falls apart quickly. Even after trying several methods to hold the sections together, this has fallen apart several times.
It's really a shame, because with just a little more attention to the dimensions of the extruded parts this could have been a fine product.