Help with screen door rollers

Hello there. I'm afraid it's difficult to ID this roller the photos alone, as it's just too deteriorated to make out clearly. Is there another roller in the door more intact that you could show us? If not, what I'll need instead is some more dimensions. Please confirm the height of the assembly, which you list as 1-1/4"; I also need to know the thickness of the assembly as well as the wheel diameter. We might be able to narrow down things from there.