I bought two of these stands to hang 4 LED par's on each in a small group, small venue environment.
First thing to note is the cost. At €29 per stand it's great value but it's not intended to compete with heavy duty, heavy stands or truss systems. It's solid and stable but common sense dictates that it might be wiser not to use it at the limits of it's design parameters.
It's perfect for holding lightweight LED's such as I have and I wouldn't in recommending for that purpose.
As always, you will get what you pay for so there are some plastic components but the fittings are solid, the T-Bar cold be a little wider but neither of these things takes from the overall quality.
Overall I think this was a very good buy for me and I'd recommend it without reservation.