I have this opi leveler phat nail file, I was given one for free to try out, after a woman used it on my GEL manicure she created. But to be very honest, maybe it helps with creating gel nails, but after that one use on my GEL nails in the salon, it probably should've been thrown away. I say that because when I got home it just was not shaping or filing on my GEL nails, and I tried it later on, on my everyday natural nails, and it just was shredded up! Honey this product is not the file for you for everyday use, and was a no go for me! It just didn't work out. You CAN get it to file your nails, one side is very smooth and the other is for filing/ shaping. It is a file, and it IS SHAPED so nicely that's the kicker, I wanted it to work! But the only time I've used it again was if I had absolutely nothing else to work with, and it might have taken me a year on one nail. Seriously, honestly, it is just wayyyy too soft to file nails. Especially my nails that are thick. But even if you had baby fine thin nails, I couldn't see this working out. There's basically zero to none grit on this file, so for shaping, you just are repeatedly going over and over the same nail. It just was too much time, energy, and no results. So this product didn't work out for me. I'm sorry OPI but I wouldn't recommend it to others! And BTW it's extremely pricey like 25-30$, and literally, and you get, maybe, one time use on a gel manicure! Definitely for salon usages, not an everyday for everyone file.