Thank you.
Dora

I'm afraid I don't know what track or rollers you need based on the provided information. I think you may have us confused with a different company; we never made doors or tracks of any kind. We're just a third party supplier of repair parts.
I'd still be happy to help you find the hardware you need, but we will require clear photos of both the track and roller. That would be the best place to start, though note that depending on what I see I may require further information.