Casement window replacement hardware

A quick learner from Minnesota says:
Can you advise what part I need to replace this one? I would like to get 2 sets of left/right because I have 4 windows.

Thanks for your help!
Thumbnail of the uploaded file named IMG_4179.jpg
Thumbnail of the uploaded file named IMG_4178.jpg
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Emily from SWISCO responded:

Hi, Lori.

Start by taking a look at our 39-138 and 39-139 or 39-141 and 39-142 operators. Carefully look over the dimensions for each set and compare them to your original assembly to see which ones match what you need.

Anatomy of a casement window
Anatomy of a casement window
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