sliding doorwall wheel assembly

A quick learner from Ft Lauderdale says:
It is corroded so I can not read the markings but looks like HILTE?
This is for my sliding pation doorwall. (This a doorwall from 1980s). I will need 8 qty total.
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Tom from SWISCO responded:

This roller looks like a dead ringer for our 81-258 . I believe this is just the part you need. Let me know if you had any questions!

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