Replacement hardware for crank windows

A home owner from Chicago says:
April 7, 2021
I need to replace the crank mechanism on 2 windows and am unsure which parts to order - any assistance is greatly appreciated.
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Bob from SWISCO responded:
April 12, 2021

See our 39-083 Dual Arm Operator. Look over the dimensions and see if you think this could work for you.
Dual Arm Crank, 21-1/2"
Dual Arm Crank, 21-1/2"
39-083
$55.87
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