Spiral balance identificatino

A quick learner from New Jersey says:
I need to identify the correct spiral balance for a tilt in style double hung window.

The diameter is 5/8", the tube length is 23", and it has a red tip.
A customer submitted photo of a spiral balance.
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Paul from SWISCO responded:
Thanks for posting! Please take a look at our S600-23 spiral balance. Do you think this may work for you?
A quick learner says:
Thanks for getting back to me.

This looks as though it should work. Is there anything else I need to consider to be sure? Any difference between the series 600 and other series that have double pins?
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Paul from SWISCO responded:
The biggest difference is the diameter. As for other parts, you'd have to take a look around your sash for any parts that may seem worn or broken. Take a look at our tutorial video on how to replace a tilt window spiral balance to get an idea of what you should look for.
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