In short - light weight duty sufficient for smaller lights. Very stable and with safety pins. They are quite lightly constructed, as you would expect, so not one for the road.
I ordered a couple of these to carry my two racks of Stairville CLB2.4s. Obviously the top tube of these (after removing the top bar) is not wide enough to give a stable mounting for the standard 35mm slot on the lights, so I adapted them slightly by fixing some of the correct sized tubing to the final stage of the stand to give a good fit - the weight is not a problem, as the CLB2.4s are much lighter than the maximum load these stands are rated for. Alternatively, of course, I could just fix the CLB2.4s' own bar to the bar supplied. It is likely that the lights will only be put on these stands rarely - if I was going to regularly use lighting stands I would have bought some heavier duty models with 35mm tubing.
In use they are perfectly acceptable - very stable with the lights I have and it is reassuring to have the locating pins and safety locks to prevent them telescoping back to a smaller height.
Happy with my purchase.