First attempt to replace a broken window mechanism wheel. Plenty room for improvement but not bad for a first attempt :) Fits a 911 G-model model but might fit others too.
I found that the model came apart too easily so ended up using a two-component glue.
You will need two of the cups. The tool will help you apply pressure on the back of the wheel without damaging the metal rail. You might need two of these.
The author hasn't provided the model origin yet.