Bottom mirrored closet door replacement roller

A home owner from Wilmington NC 28405 says:
Have attached picture of original roller

From roller to end of encasement measures 3-1/8"

Width of encasement measures 1-3/4"

Cannot find any brand or part number. I have two sets of mirrored bypass doors that I have painted the metal trim white. Need to replace rollers and track.
Thumbnail of the uploaded file named 66F25268-E1A3-4F2C-B2FD-3ACE72F91391.jpeg
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Paul from SWISCO responded:

Hmm..it seems your roller is actually a part of a full housing assembly. Therefore, we can't really give an accurate suggestion on a replacement. We want to start you off by reviewing a list we placed on this page of different mirror door rollers. Look through each one and see if any of these are a potential match. if not, get back to us with a couple of more photos showing the entire roller, including the housing, and we will continue to search for a match. 

Sliding closet mirror door rollers and tracks
Sliding closet mirror door rollers and tracks
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 Sliding Closet Mirror Door Rollers & Tracks
Sliding Closet Mirror Door Rollers & Tracks
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