SHARPAL 113N Credit Card-Sized Diamond Sharpening Stone, Coarse 325 Grit Pocket Knife & Tool Sharpener, Portable and Convenient for On-the-Go Use

I Love Love Love them. They are just what I wanted to sharpen my scalers while at my chair while I am working on my patients. I am a dental hygienist. They are so convenient, just the right size. I just wish that I had had them years ago. I work for the Navy and we have some, but I am sure they spent a lot more for them. We don't have enough at the clinic, so I bought my own.Love not having to use special oil or water like the India or Arkansas stones. One of my great pleasures in my job is having sharp instruments. You do a first class job.

I bought the coarse one. I wanted a sharpener I could keep in a kit to sharpen random crap like axes, shovels and cheap knives for when they get really messed up.It's very small, the finger hole is very useful, and the small mirror is a nice touch for a kit that might not already have a mirror.Even though I already have half a dozen ways to sharpen my tools I think I'm gonna buy more of these. They seem like they'd be nice to throw in any random kit and keep the tools maintained. Good product

I would give this product a 5 star but unfortunately it he only reason why I gave it a 4 star is mostly because it's a little loud when sharpening my knives, but it does leave a razor sharp edge so yes I definitely recommend this to anyone looking for a portable knife sharpener

I wear a sheathe knife everyday, part of my tool kit. It gets used for a lot of nasty chores, cutting away old carpeting from under pool supports, opening boxes, removing gum from a tiled floor, not to mention use outside in the woods, etc. I keep it sharp by using this easy to carry Sharpal Diamond touch up stone, and the case as a strop. Just be careful using it, sharp blade and all that elementary safety stuff.

This diamond credit card is exactly what I needed for my dental instruments. It puts a wonderful edge on my instruments and makes my work more thorough with less effort!!

I rally like this sharpening card. I use it to sharpen my dental scalers. Away cheaper than the Hu-Freidy sharpening card but works the same way. If you are a dental hygienist, buy it!

Single pass works!

Useful but too heavy for edc or a bug-out bag. I threw it in my wallet and it felt like I had doubled the weight so I threw it in my glove box maybe I’ll use it some time...