Rollers for side-sliding vinyl windows

A home owner from Colorado Springs, CO says:
We have a total of 15 windows that need new rollers (2 for each, total of 30). The original window maker is unknown. The rollers are housed, the individual roller is about 3/4 inch in diameter with 5/8 inner (rolling) diameter and a thickness of 3/16th. The enclosure of the roller is 5/16th wide and the screw holes are 1&7/8 inch apart.
Please advise.
User submitted photos of a window roller.
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Tom from SWISCO responded:
Thank you for your patience in this matter. We are currently working on a possible replacement roller and will let you know as soon as we have more information available to view.
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Tom from SWISCO responded:
Alright, please see our new 87-211 and let me know if this can work for you.
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