SS roller 84-106

I had a year ago purchased this model, but in ordinary spring steel, which rusts out in less than one season !. I would like to replace all the rollers with the 84-106 version, which is advertised as having a SS spring. However, can you tell me if the wheel carrier is still aluminum, or is that also SS. If not, do you make an all SS & nylon model ?

The last post was a great question. I am trying to make the same choice - certainly favoring SS and nylon. Unfortunately your listing, while mentioning the wheel diameter, does not mention the thickness of the wheel nor the width of the SS spring band. My sliding screen has four wheels and, to anyone reading this who has the same, I would recommend replacing all four. Another note to anyone trying to make this choice: in the presence of moisture (outdoor weather) dissimilar metals will end up corroding - e.g. steel and aluminum. That's why the stainless and the nylon would be such a great choice.