SWISCO - The Replacement Hardware Authority

looking for these wheels

A quick learner from Arizona says:
They are for a window and we can not find the brand of window. The rollers are 1/2 wide 1 3/4 long
Can you help?
User submitted image of their window hardware.
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Tom from SWISCO responded:
Thank you for your patience in this matter. After extensive research, we think we may just have found something that will replace this. We just need to have it made up for you, which will take a little time, but I'll let you know the moment that it's available.
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Tom from SWISCO responded:
Alright, please see our new 87-222!
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