Spare part for roof window "Galeria Smart" from Doerken/Braas

These roof windows are almost 20 years old and on several of them this part broke already,
This replacement is not meant to be an exact copy but it seems to do its basic function.

Update: on some other window of the same style the other part of the mechanism also broke so I had to construct and print it also.

Another update: I made a reforced version of the part which is attached to the window.
Please insert two m3 screws into the holes.

I am using 80% infill now.

Please print th