Originally Posted by Rusty Traque:
If I recall correctly, S Helper Service wheels are a chemically blackened brass alloy.
Rusty
I think Rusty must be right; a quick check shows no magnetic properties, so it must be brass of some kind.
I don't know enough about metals to say for sure why it works better; all I know is it does, and it looks 1000% better as well;if I can figure out how to post a photo of my 302, you'll see for yourself!
Mark in Oregon