Specification: 1.High speed for doing manicure easily: This nail drill has adjustable speed button (0-20,000 RPM), which makes the electric nail file more effective and smooth to polish nails. And it allows you to handle the drill more easily and safely, and it is also friendly to beginners. 2.Practical nail drilling machine: it is a practical polishing grinder tool,which is suitable for home nail dipping and pedicure. It is smooth enough for natural acrylic fingernails,gel polishing, powder manicure, and removal of cuticle dead skin and calluses. 3.Don't change the turning directions too frequently,otherwise.it will damage the grinding head.When adjusting the speed,do not press the right switch button, wait for the handle stop and then press.