Glass nail files aren't like sandpaper files. Glass files are a little easier to use and file down your nails faster. The sandpaper files are used for more of buffing (from what I know, I don't use them).
Infographic for Electric Nail File Drill Bits There are a vast array of different nail drill bits to use with your electric nail file, and knowing which one to use for which circumstance can be a challenge. So we have put together a quick ‘cheat sheet’ infographic to provide you with nail drill bits materials, maintenance and the types of bits that are most commonly used.