sliding window glass rollers

A handy person from escondido, california 92027 says:
I have to replace some plastic rollers for aluminum horizontal glass single pane windows made by international in 1976. The roller assembly is 5/8" deep, by 2" high, and about 1/4" thick.(They slide into the slot that is 5/8"x 1/4" from the bottom and held in place with a screw going through the open end of the slot on the window edge. The roller itself is about 1/8" thick by 5/8" diameter.

Any help you can give would be appreciated. Thank you.
User submitted picture of sliding window glass roller.
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Donna from SWISCO responded:
Good morning! Thanks for posting. Please see our 87-173 window roller. I believe that this is the newer version of your roller here, which may have been discontinued. Compare their dimensions and let me know what you think.
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