Extra-Fine diamond (9 micron / 1200 mesh) to polish and refine a razor edge after sharpening with a coarser diamond stone. Roughly equivalent to a 1200-2000 or so grit waterstone, so this is a great workhorse stone for everyday sharpening and maintenance of a nice standard edge. This might be all you need, it doesn't sounds very fine with all the super high grit Japanese stones you'll see, but it's pretty fine and will put a nice edge on the average kitchen knife!
Guaranteed not to hollow or groove, DMT®’s precisely engineered Dia-Sharp® Bench Stone with continuous diamond surface assures consistent, even sharpening every time.
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!
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!
Measures 8" x 3".
NOTE: Because they are so fine, the surface of these stones will appear scratched and there may be small indents/pits in the surface, but it's just a by-product of their manufacturing and does not affect performance. It's not as visible on the more coarse stones because of the big chunks of larger diamonds on the surface.