It is used to support a Razer Seiren Mini. The microphone weighs about 120g, so it has no problem holding it steadily.
It can certainly hold even heavier desktop microphones without issue, because it is very well built for its price (~20€).
For professional microphones that are quite heavy, I do not know if it can cope and not fall constantly.
For anyone who wants a microphone stand for entry-level situations, with arms of considerable length (on a 140cm desk, with two 27' monitors, it easily reaches the center of the desk and above the monitors, whether the microphone is positioned crosswise or horizontally), I recommend it.
Finally, it also has an adapter that screws onto the base of the microphone so it can then be screwed onto the arm (if I am not mistaken, it is called a “3/8 inch female to 5/8 inch male microphone stand screw adapter”).

Purchased about 1 year ago and it hasn't suffered anything. It holds the quadcast and doesn't move a millimeter

It does not stabilize easily. I have tightened it enough, but I am afraid it might come loose and damage the microphone...
So far, however (about 1 month), it is holding up.

Absolutely worth the money. I did not expect it to be this good considering the price. You can adjust it in so many different angles and it always stays in place. You can also move it away from you when you are not using your microphone without having to adjust the screws. Excellent product!

Very good product! Solid construction and responds to movement very smoothly! For the microphone I use, the HYPERX QUADCAST S, it is perfect, no issues with weight and placement! It's worth it!

A very good and sturdy arm. It does its job, quite flexible, and a big positive is that its base is solid. Recommended 100%