Which roller to buy?

A quick learner from LA says:
In the picture you see my mirror door with a concave wheel. I had to replace the old track after buying my home and got the pictured track that looks like it has a track that requires convex rollers. According to my attached picture, which convex roller do you have that would be able to replace the concave roller i currently have on the mirror door?
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Bob from SWISCO responded:

Thanks for posting. This looks like our 23-086 Concave Roller. Please compare and let me know if you think this will work for you. 

A quick learner from LA says:
Thanks I think 23-081 is what I need.
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Bob from SWISCO responded:

The 23-081 and 23-086 have the same body, but the wheel design differs: the 23-081 has a convex wheel (meaning its center is rounded outward), whereas the wheel in your roller is concave (meaning its border is grooved inward). The 23-086 has such a concave wheel, hence why I think it's the better choice. Let me know if you have any questions or concerns. 

A quick learner from LA says:
Yes my door currently has concave roller but i need to replace the roller with a convex one. Are there any other roller models you have that are similar to 23-081?
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Bob from SWISCO responded:

I'm afraid not. The 23-086 and 23-081 that I mentioned above are the only rollers made with this type of design.

A quick learner from LA says:
Thank you! I purchased the 23-081s, hopefully they will fit on the door without too much trouble.
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Bob from SWISCO responded:

Perfect, thank you for the order! Please feel free to reach out if we can be of any further assistance. 

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