Mirror Closet Sliding Door Bottom Wheel Broken

A handy person from Palm Desert, CA says:
Hello! :)

The first pic is the part I removed. It has the broken wheel...plastic is missing.

The second pic is the still-installed part on the door which is not broken...still has the white plastic on the wheel.

Is it possible to order a new one or is there a kit to fix the wheel?
Thumbnail of the uploaded file named 20210215_192009.jpg
Thumbnail of the uploaded file named 20210215_192031.jpg
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Bob from SWISCO responded:

Thanks for the clear photos. This looks like our 81-139 to me. While this is typically a roller for patio doors, we've seen them used in closets before. Compare the dimensions and see if you concur. Note that in a few cases, that 'T' on the back has proven to be a bit too big. If that's the case for you, you might have to see if you could snip the ends of the T down to size to fit the door. Just note that any altered hardware cannot be returned for refunds. 

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