Anderson Sash Balance

A quick learner says:
Are these pictures good enough to identify the parts I need? I can remove them and take more pictures if I have to. Note the sticker marked 9-31, and the number 8-85 stamped into the metal.

Thanks for the help
User submitted image of their window hardware.
Profile picture of Paul
Paul from SWISCO responded:
Based on that 9-31 number, I recommend our 24-939 Andersen sash balance.
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