Looking for door handle

A home owner from USA says:
I work in NYC. I am trying to find replacement handles for my bosses home.

I am having a hard time finding them. I asked other window parts places and was referred to you.

I attached some photos to help you visualize what I am looking for.

The opening is 3/8
User submitted photos of a window operator handle.
Profile picture of Donna
Donna from SWISCO responded:
Thank you for posting. It looks like you have an older style handle. You may want to consider our newer style 39-224, though it has a 5/16" hex. Double check your dimensions and see if this could work as a replacement.
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