Do you sell this glass door roller?

Thanks for writing in. This appears to just be the inner portion of a roller. The outer housing is likely still lodged in the door. That said, since you are in Texas, I suspect you might have the 81-004 roller assembly. To replace the complete roller assembly, you need to remove the bottom rail of the patio glass door and unscrew the top screw holding the housing to the rail. You then should be able to remove a whole roller, outer housing and all. Compare to the 81-004 to see if this matches what you need.

Dimensions for 81-004

Dimensions for 81-004

Alternate view of 33-104