Use a rugged file card from Grainger to help you clean your mill files. Steel file cards feature steel wire bristles that can remove loose metal filings and other debris from your files. Choose from 8" and 10" file cards and a 10" file card with brush. Whether your standard metal or mill files are smooth-cut, bastard-cut, or second-cut, Grainger helps you keep them clean with high-quality file card options for you to browse.