[Milsurplus] FW: Dremel tool wire brush question

[Hubert Miller]

To clean up corroded battery holders in portable radios, what Dremel tool attachment would you use?
I am thinking wire brush, of course, and in sizes ½ inch down to 1/8 inch. I want of course to be able to
concentrate only on the corrosion and rust, not eat away any plastic of the unit. There are steel wire 
brushes and even stainless steel. I don't really understand the difference, why you would prefer one 
metal over another. Any suggestions?
thanks-
Hue Miller