Need help identifying hardware

A quick learner from USA says:
I have a number of attachments and I am asking for you to help me with identifying this hardware.
If there is any additional information that is needed please let me know.
Thank you
User submitted photos of a window balance.
A quick learner from USA says:
one last photo
Profile picture of Tom
Tom from SWISCO responded:
We should be able to help replace this, though it will need to be custom made. Can you just tell me how many you need?
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