The party carries mine is revealed by rotating the top of the pen.
It's intuitive and efficient, has the example of my old I used in Bac F1 rotrings.
Filling mines under the gum as usually it Mechanical pencil remember by its hexagonal part of the BIC criterion.
The price seems still high.
No enclosure, just the black cardboard packaging remains elegant.
The stylus was part unscrewed the delivery (like another reviewer). But once tight that it remains in place.
I am not able to appreciate the brass part but write, draw with mines supplied with is a real pleasure.