Closet hardware replacement

A home owner from Milton, Ontario says:
Good day, could you please help identify the part I need to buy to replace this closet hardware? Many thanks in advance
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Bob from SWISCO responded:

Thanks for posting. It looks like you have a convex roller for your mirror door. The 23-199 looks correct. Please compare. We also carry a sturder, ball-bearing version of this part, the 23-225. Let me know what you think. 

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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