Stainless Steel Nail File with Anti-Slip Handle and Leather Case, Double Sided and Files Nails Easily for Men and Woman

This is the first glass nail file/buffer I've tried and wow: It's amazing! And it's a pretty sweet deal considering that it includes a protective cork holder. It works on the nail edges and on the surface to remove ridges, buff, and polish the nail to a glass-like shine, in just a few minutes for all nails.The pictures I've attached are of the Mr. Green file next to another glass nail file (Mont Bleu). The Mont Bleu file is etched on both sides in a completely different way (more similar to traditional files); doesn't double as a nail-surface tool (unless you want a super-rough nail surface); is about half as thick; comes in a thin, non-protective plastic case, and comes from Czechoslovakia rather than directly from Amazon, with a steep shipping charge and requires signature upon delivery.With the Mr. Green file, in a few swipes I got a gleaming finish on each nail surface, and with a few more I sculpted the ends of the nails in a way that sealed them to help keep them from developing chips and cracks. My nails look fantastic and feel far healthier and harder. The file did produce dust that seemed like more than just nail material, so I take it that part of the dust may be glass. In researching glass files, I learned they eventually wear out but should last at least a year. Other sources say they last forever.The Mr. Green file is etched on one side only. The other side is rounded and smooth. However, this makes the file thicker and less prone to breaking than most others. I suppose a nano glass file with both sides etched might last longer than this one (if it doesn't break); it's a tradeoff. The etched side of the file seems quite coarse, but that doesn't seem to matter; it gives a much smoother and more durable finish than my beloved Zen-on superfine metal nail file (which I bought decades ago at a guitar store and can no longer find). I was curious about why this is the case, so I read up more on glass/crystal nail files and learned that they fuse the keratin and help keep nails from cracking or chipping.The Mr. Green file fits very snugly in the cork holder, which seems protective. I might suggest making the container narrower, though, to make it more easily portable.So, goodbye, four-step, few-use buffers: You always disappoint. You wear out after several uses, take much longer per nail, and leave nail edges prone to developing tiny chips and catching or splitting in a matter of hours.Note: This file is not well suited to cuticle care, so I hope Mr. Green comes out with a round glass cuticle tool.I'll try to remember to update this review after using the file for six months or so to report on longevity.

I took a chance buying this, and it’s probably the nicest nail file I’ve owned. It is very well made and durable. After heavy, hard use, the file works as well as the day I first used it. I like how it has two different grits/courses on each side of the file. The leather case that comes with the file is a great addition. When traveling with the file, it prevents it from getting loaded with debris and gives it a bit of protection. I will never buy those cheap cardboard, sandpaper disposable nail files ever again. I can’t believe how much more effort I had to use with the cheap files compared to this stainless steel file. I highly recommend it, especially for the price. I actually just bought a second one to keep in my car. You won’t be disappointed if you purchase it.

It does the job that it's intended to do. Your nails will shine like glass. The one slight negative is that, since it's glass and is not flexible, small parts of your nail surface that might be a little depressed won't get buffed by the file. But, the nail surface that does get buffed is much smoother and shinier than you get with the disposable nail buffing emory boards. You also don't have to use three or four different steps to make them shine, like you do with those boards.For those of looking for regular glass files, to shape your nails, this is not the file for you. These are strictly for buffing the surface of your nails, not for shaping. Although this file has a more coarse file on one half of this nano file, it really isn't that much more coarse than the fine side. You may get a little bit of shaping out of it, but it's not really for doing much shaping. It's more like a tool for finishing off the end of the nail, after you use a regular file, to make the ends of your nails feel smoother than a regular file would leave it.UPDATE5 stars for the upgraded nano file.I purchased the upgraded nano glass file and this file is even better. It has two coarseness sides (actually they're side by side, on one side of the file. The other side is smooth glass). The coarser half (underneath the Mr. Green name) is coarse enough to shape the nail, but you can also use it to smooth the surface as well. The depressed areas of your nail surface can be smoothed over by using this part and it still leaves your nail smooth and shiny, but you can also use it to file down the edges of your nails. You can then use the finer half to buff the surface of the nail, but honestly, the coarse half still leaves it so shiny, that you may not even want to bother. All in all, it does a great job, much better than those throw away nail buffers. Over the long term, it will save you money, because you don't need to constantly buy new, disposable buffers. This one should last for years. It appears to be very strong, as well.