Casement Crank Stripped

A home owner from Centennial, CO says:
I have two Caradco casement windows which I can no longer open. The hand crank is stripped with the internal gears of the window. I see the number 20755 on the mechanism. I would like to order replacements for left and right configurations. Can my pictures help to identify what parts I need to order? Also, can you tell me if the pictures are left or right?

A customer submitted photo of a window operator.
Profile picture of Paul
Paul from SWISCO responded:
Thanks for posting! Have you seen our 39-155 or 39-156 Caradco Window Cranks? They appear to be very similar to your hardware. Please take a look and compare their dimensions to your own operator and see if you think it will work.
A home owner from Centennial, CO says:
Paul, thanks or your recomendation. I ordered two 39-155 mechanisms are they work great. Installation was quick and easy.
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