Grigg is technically correct but I think SW Radial is referring to the aluminum colored finish that some powder coaters offer. I've seen it on some Rods and I sort of like it.
Almost looks like a ceramic coating to me, at least the color I'm familiar with.


1953 Chevy 5-window 3100
In the Stovebolt Gallery
More pix on Picturetrail

Dave
Engine & Driveline Moderator

If you can't make seventy by an easy road, don't go. ~~ Mark Twain