This is a minimalistic phone holder for Peugeot 1007 and other vehicles with the “ball vents" like : Partner or Citroen Berlingo < 2010, etc.
You can use togheter with a magnetic phone holder that you can find in the store or aliexpress (ordinary) and from which you have to extract: the front part (magnet + soft cover), the ball (for rotation) and the screw.
Be careful when screwing, that the head of the screw should be completely buried in the hole at the level of the plastic.