identify parts

A home owner from south texas says:
House is in south Texas, built early 60's.
Windows are aluminum, single-hung non-removable sash.
User submitted photos of a window balance.
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Tom from SWISCO responded:
Thanks for posting!

Before we move forward, can you confirm the diameter of your balance tube to be 5/8"?
A quick learner from south texas says:
0.55"; 9/16; nominal 5/8.
-shu
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Tom from SWISCO responded:
Alright, we've been doing some research and we think we can make this balance for you. However, we are just waiting for a few of the individual pieces to come in so that we can assemble it, as they were not originally in our catalog. I will let you know as soon as they are and we can get the ball rolling!
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Tom from SWISCO responded:
Alright, thank you for your patience. I recommend you check out our S500-17 spiral balance, as well as our 17-094 and 18-075 . Check them out and let me know if you agree.
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