Replacement Rollers Needed

A quick learner from Springfield, VA says:
Please see the attached photo. Customer did not want us to remove the existing rollers without a replacement on hand. Can you identify the part?
User submitted image of their door hardware.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
It's hard to tell exactly what you have. Is there any way we can see it removed from the door? In the meantime, see our 84-100 as a possible replacement.
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