Multifunctional Nail Drill Kit: Comes with 20,000RPM powerful rotary motor and 11 kinds of 3/32” mental nail drill bits, this electric nail file can be used for all-around shaping, buffing, grinding, polishing, removing for acrylic nails, poly gel nails, artificial extension nails, thick nails, builder gel, dip powder, fake nails, natural nails, and cuticle dead skin.