Mirror door roller

A quick learner from USA says:
I need to replace these. Please let me know which one I have. The roller is concave.
User submitted photos of a mirror closet door roller.
Profile picture of Tom
Tom from SWISCO responded:
Take a look at some options and let me know if any one of them matches your part. We have the 81-125, 81-228, and 81-310 rollers, which might line up with yours. However, you've only removed the inner part of the roller. To compare our roller to yours, remove the outer part of the housing, which is still screwed into the frame of your door.
A quick learner from USA says:
My need is for a sliding glass door in my bathroom. The old roller appears to have had a plastic coating on the part where the wheel makes contact to the guide. The inside part of the assembly does not come out so all I have is the part I sent to you. 81-125 looks similar but is for a patio door with a steel roller. Do you have a similar roller to 81-125 with a nylon wheel or steel with nylon coating on the roller?
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