+ Simple plan stuck on the rod
+ Showerhead possible right and left of the bar
+ Fixed seat of the shower head and the slider on the bar
+ Inexpensive, yet good optics
o Possibly for children's or female fingers could be to adjust the slider set to something fixed the "button". This, however, the above solid seat of the slider on the bar
If what changes / negative attention, I will report. But for 7 euros I see no alternative in the 25mm class to this cone gliders ;-)