Pivot shoe for spiral balance

A contractor from Atlanta says:
Looked all around windows and hardware, but there was no name or model number anywhere to be found. Customer wants to close on sale in 7 days, but really needs these replaced. Haven't been able to source anything locally (Atlanta) as of yet. Please help! Thank you in advance. Hope you can match a replacement part.
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Bob from SWISCO responded:

We don't have a pivot shoe in that exact size, but start by looking at our 15-173 or 15-134. These appear similar to yours, I would just go over our measurements to confirm they match.

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