I need to replace my broken opener

A contractor from Springfield, MO says:
The cranks have Pella brand handles. I have one opener that is broken. Hopefully you can help figure out the right replacement parts.

Thanks
User submitted a photo of a window operator.
Profile picture of Paul
Paul from SWISCO responded:
This operator looks similar to 39-175 or 39-176, Pella Operators. What do you think? You should also check out its handle, our 39-109B.
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