Emery Polishing Compound grit
Contains coarse grit to remove suface imperfections, scratches, rust, and burrs from iron, steel and other hard metals.
When using the buffs, attach to the tapered spindle. As it is spinning, hold the bar to the buff so that it puts a light coating on it (a few seconds). When changing bars, clean off the coating on the buff with a soft cloth as best as you can. These should be used dry.