Wall hanger system

This is a simple wall hanger that I created around some curtain rails. I created the basic design to be mounted with double sided tape or glued in place. I tried to make it easy to change for other sizes of pipes/rods/... Included are STLs of the parts that I actually printed and some adjusted ones for a 6mm rod and with hole for screw mounting. Also FreeCAD file for customization.
Green, black and transparent pieces are printed in PETG. White ones are PLA. Both work as expected. Print pieces laying on the side - no supports needed.

Please post your makes, comments, ... :)