Likit patio door roller

A home owner from N. California says:
I have 3 sliding glass doors manufactured by Likit, which went out of business. The rollers are shot. How do I ID the correct roller for these doors? Or do I replace the entire 4 foot roller assembly? Do you know how many rollers these doors have top and bottom?
Thank you.
Kelley
User submitted picture of patio door roller from Likit.
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Casey from SWISCO responded:
Good news! We are currently working on a possible replacement. We will post again in this thread as soon as we have more information available for you.
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Casey from SWISCO responded:
Please see new SWISCO product code 81-265, replacement roller assembly.
A handy person from California says:
I see you have 81-265 as a replacement for Likit sliding glass doors. But do you have a replacement that includes a metal wheel instead of the plastic wheel?
A handy person from California says:
Oh, and preferably with actual ball bearings too.
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Tom from SWISCO responded:

Unfortunately, the 81-265 is not made with either a metal wheel or ball bearings. I apologize for the inconvenience. 

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