scotch brite lot less harsh then 400 grit.. 
how did you clean the head??
I sell 3m and the maroon scotch brite is in between a P150 and P180 or exactly equal to ansi 150. The very fine = greenish blue is in between P360 and P400 grit. If anyone is interested I could post a chart showing different grades, they even have micron grades in Trizact
I never knew what the colors coresponded to, grit wise, so I'd be interested in seeing a chart.
Otherwise, I always thought:
brown = coarse
red = medium
blue = fine
gray = ultra fine
I was never sure where the green pads fell.
-Todd
The green hand pads are identical to the maroon hand pads but they are safe to eat. Selling to dairy companies you have to sell the green, but grit wise they are medium just like the maroon.
In the roloc discs the blue to me is green. It looks green to me anyway and that is why I always say greenish blue. I will copy the chart and post it soon.
I can read it on my screen but not great. If you have a 19" LCD or bigger like me it should work.
