For a stool of 40 to 50 euros, they are initially beautiful, fantastic design but they do not meet high expectations in terms of materials.
The instructions are wrong. The screws go in completely differently. Specifically, the very small screw goes in the bottom part of the frame, the large screw goes in the top part, and the medium screw goes in the seat.
Now, only time will tell!

Very good and sturdy stool. The seat height is around 75 cm, which means it requires a table around 105 cm. The painted metal is also beautiful.
The seat is made of hard plastic, but very comfortable. The back uniformly embraces the waist and provides good support.
The assembly is a pain, the instructions are terrible. When assembling it, keep in mind that the back legs are longer and have a greater tilt. Also, do not tighten the screws, put everything in place, measure with a level, and then tighten.
Both stools wobble slightly, but once someone sits on them, they are stable.