How to choose an e-file?

Power
E-files without dust collectors should be about 30-60 Watt.

Low or no vibrations and high rotation speed
You’d need an e-file with 30.000 and more rotations per minute to work with artificial materials.

Reverse Mode
You’d need it to work with nail plate and cuticle. Sometimes it helpful during correction of the extensions.

The Wire
The wire connecting machine and handle can be straight or twisted. Twisted one is more convenient as it takes less space and do not tangle.