Attached is the correct size in pictures.

A quick learner from USA says:
April 24, 2023
Hi,
My order # (above) is in the process of returning. I ordered 39-175, 39-176 and upon opening the package I discovered the arm attached to the gear was too long.
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Jasmine from SWISCO responded:
April 25, 2023

Hey there! I am sorry to hear that your purchase didn't work out for you. 

I believe you may need our 39-096 and 39-097. Look over the dimensions and carefully compare the measurements to your existing casement operators to confirm that these might be a better fit.

Here are the dimensions from part 39-096.

Dimensions for 39-096
Dimensions for 39-096
Pella Window Crank
Pella Window Crank
39-096
$120.45
Pella Window Crank
Pella Window Crank
39-097
$120.45
Sash Crank Operator, Pella
Sash Crank Operator, Pella
39-175
$241.70
Sash Crank Operator, Pella
Sash Crank Operator, Pella
39-176
$241.70
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