This stone features fine diamonds (25 micron / 600 mesh), roughly equivalent to a 600 grit stone. It doesn't sound very fine, but trust me, this is a workhorse and will get you very close to a final edge without a lot of time or effort. I think a lot of people make the mistake of assuming "more is better" when it comes to very fine grit stones... it's not better, it's just smaller grains, which actually makes the sharpening job much longer and more frustrating if that's all you have. I'd personally much prefer to have a few coarse and regular fine stones than a bunch of very high grit expensive stones... trying to get a precise and long-lasting edge quickly and consistently is much easier when you start with a more coarse stone. If you just start with a 1000 or above, you'll be going at it for a long time, and the added time won't make a better edge, it will just more likely result in an inconsistent edge (and a frustrating experience). A coarse, fine, and extra fine set will be much more useful for most people than a bunch of more expensive higher grits!
Guaranteed not to hollow or groove, DMT®’s precisely engineered Dia-Sharp® Bench Stone with continuous diamond surface assures consistent, even sharpening every time. This D8F fine plate is very heavy and very flat and is great for both knife sharpening as well as for helping remove scratches left on fine stones from flattening with the coarser DMT diamond plates or other flattening stones.
Diamond sharpening "stones" like this are an affordable, easy and fast way to sharpen your knives. And of course they never need flattening, so no need to invest in a lapping plate!
Measures 8" x 3".
Note that DMT does NOT recommend this stone for lapping/flattening waterstone. Get one of the big DiaFlat lapping plates (extra-coarse or coarse) for that job, they will hold up MUCH better!