Review on 3M 10120 Synthetic Steel Wool by Mark Dahmer

I have used these fretboards on guitar necks, chrome, car parts and plastic boat windshields. They don't leave behind metal filings like thieves' wool. (Important for guitars with pickups (they are magnetic)) Will not scratch chrome or plastic. I took my 2nd pack and am sure I will be back for more. (Note: Always test a small area to see how the material responds to the pad before diving at full speed. It's always best to be safe.