An electric file (formerly called a "drill") is tool used by nail technicians to speed up, streamline, or make easier some nail services; the electric file allows nail technicians to file or finish areas of the nail that are hard to reach (for example, under the free edge of a newly created sculpted nail); the preferred term for a nail drill. Electric files can enhance the nail tech’s filing methods by allowing her to shape nails faster, do more proficient backfills, and refine the cuticle area with precision. Electric files used by technicians who have been properly trained are safe. You will also find that more techs are using an electric file to refine artificial acrylic, gel toenail services, and callus refinement during pedicures. (Kupa's Upower electric file is shown)