Balance system

A quick learner from USA says:
I was asked to repair a few windows by one of my clients. I have attached a picture of the balance. Any help would be greatly appreciated.
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
I think we can help, but we will need a bit more information. There should be a shoe or clip at the end of the cord. Can you show us a couple pictures of it? That would be a huge help.
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