The Medicare Dual Action Foot File features a coarse surface on the file head that safely removes even the toughest build up of hard skin. The finer surface on the handle smoothes away any remaining roughness. To use, ensure your feet are clean and dry, then hold the file by the handle and gently rub away thin layers of hard skin with the coarse surface until the skin is removed. Finally, use the finer surface to smooth away any remaining roughness.