Bow window crank replacement

A home owner from Tewksbury, Massachusetts says:
April 8, 2021
I need both hand cranks. The picture supplied is of the crank for the left side window looking out from within the home. I believe I am looking for 39-187 & 39-188 but would like a confirmation from your experts.

Thanks

Jim
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Casey from SWISCO responded:
April 13, 2021

Hello,

The orientation of your operator's base arm actually looks like a match to our 39-089 and 39-090. Take a look and see how the specifications compare to yours. Thanks for posting! 
Window Dyad Crank, 5"
Window Dyad Crank, 5"
39-089
$43.70
Window Dyad Crank, 5"
Window Dyad Crank, 5"
39-090
$43.70
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