Just as effective as any salon drill
Okay so Ive had this file for possibly a week now, at first I was leery to buy this due to so many negative reviews. I use this as my portable, and I love it so far, it works great the bits are very easy to change in and out. When changing the bits be sure to change the polarity to negative first, then slow the product down all the way, making sure you turn off all power switches before you change the drill bit, so you don't break it. I have not had an issue with the product over heating or anything like that. I have no complaints this is an excellent product, and the price makes it even better.
Rating: 5 stars