Sliding door rollers

I'm afraid we don't have a roller exactly like this. Before I go any further, I'd like to clear up a few details with you. 

To start, can you tell me the diameter of the wheel? Can you also tell me the width of the housing? I assume that the measurements you gave were 2" for length and 1-1/16" for height, but width will also be important. 

I can't guarantee that we will find a match with that data but I will do my best.