Hardware needed for replacement

A quick learner from USA says:
This arm is 12 inches. Let me know if you have this part or something comparable. Spoke to your rep yesterday he asked I forward photo for identification. Hoping to hear from you.

Thank you in advance for yout time and help
Nick
User submitted photos of a window operator.
Profile picture of Tom
Tom from SWISCO responded:
I'm afraid we don't have this exact part. Could you instead use something like our 39-077? Look it over and see what you think.
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