Medium quality materials. It is a good choice to prevent the tower from sitting directly on the floor. The automatic evaluation questions concern the computer screen, so I don't know if I got the wrong product or if there is a mistake in the system. But I have never seen a floor screen stand before :P.
Anyway, it is satisfactory for the job I want it for, but it is definitely not suitable for a large tower, it is at most a mid tower.
UPDATE: It broke within two months

It sits from the weight of the tower and the one arm disconnects from the other that are in a cross connection between them. As a result, the base is not functional.