Review (5/5): Ridges are gone!  Shine is great!  Love it!
I ordered this because I saw something similar on QVC and this was much cheaper with all the attachments - rollers (8 file rollers and 9 smooth ones). I also have Amazon Prime so the free shipping was really a plus compared to QVC. Also, if I didn't like it, I could always return it for a full refund. I wanted to try it because I'm older and my nails have lots of ridges. This definitely takes care of those. Using this also makes your polish go on much smoother. This is really easy to use on your finger nails. I have a hard time on my toe nails because I really can't reach my feet very well so I've decided to let my nail salon pedicure take care of my toes.
I've had this now for about 6 months and it works as good as new. I'm using the same batteries and luckily, the rollers lasts thru numerous uses. I just started my second file roller. The shine roller lasts much longer. I really like the carry-bag that comes with it as it allows me to take it with me on trips.
I love this so much that I'm ordering two more - one for my daughter and one for my sister for Christmas.
https://www.amazon.com/dp/B01F7JMBNM/ref=cm_cr_ryp_prd_ttl_sol_4?th=1