Here's a purchase I really regret. First, it is poorly machined: the stand attaches to the trunk by three screws, but a hole is not opposite and it was therefore possible to screw it in two (of three). The foam carpet underfoot paste (anti-skid) is poorly cut; it should be adjusted with a cutter.
As for the quality: when I screwed clamping ring, the attachment of the lamp socket (plastic) broke. I have repaired with glue and it holds.
In short, very expensive for a poor quality. It is not worth 19.90 euros in supermarkets!