If you like me have windows with blinds between the inner and outer glass you probably will have a rod on the side to change the angle on the blind. There is a holder for the rod that over the years will probably dry out and crack and the rod will not stay neatly on the window frame. I made this replacement part from the original design on my windows.

It's made for a rod that's roughly ⌀5mm

Screw hole is ~⌀3.5mm and screw head ~⌀5.5mm

I recommend to print in PETG ore something more flexible.

Made several test with PLA but its too hard/brittle and cracks very easy..