Replacement rollers with sea minerals. They effectively smooth and remove calluses for silky soft feet in no time. They are suitable for use on wet, soaked, or dry feet. These replacement rollers are compatible with all Scholl electric callus removers. The coarse rollers smooth and effectively remove calluses. The Wet&Dry replacement rollers with sea minerals have been specifically designed for use on wet, soaked, and dry skin. Additional replacement rollers are available in fine, extra coarse, and ultra coarse grits.