Hurd casement window crank replacement

A quick learner from Michigan says:
December 3, 2021
Hello -

I have some older HURD casement windows in my house and need to replace the window cranks on left and right opening windows. It looks there is a possible model # 07900 stamped in it. Hopefully you can help me out on what I might need to order to replace these. Thanks and have a good day

Thumbnail of the uploaded file named inside picture of hinge (1).jpg
Thumbnail of the uploaded file named left hinge hurd casement window.jpg
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Casey from SWISCO responded:
December 7, 2021

Hello,

This looks a lot like our 39-388 and 39-387 operators. Take a look and see how the dimensions compare to your hardware. Thanks for posting! 
Split-Arm Operator, Wright
Split-Arm Operator, Wright
39-387
$36.20
Split-Arm Operator, Wright
Split-Arm Operator, Wright
39-388
$36.20
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