roller for glass sliding door

I'm afraid I don't know what your question is. Assuming you need a new roller, then we will require a photo of it to identify. Please remove it from the door and show me a clear picture of the back end, top, and side. Dimensions would also be a big help.

Let me know if I'm mistaken. If you can, please clearly explain the issue and what you need so that you and I are on the same page.