Naniwa Super Stone 12,000 Grit Japanese Whetstone Sharpening Stone, NO Stand, 21cm x 7cm surface, 2cm thick.
This ultra-fine stone is used for giving a knife a final polished edge. It is one of the finest stones available anywhere. There are manufacturers which claim higher grits, but few can yield a mirror polish edge like these Naniwa Super Stones can. Recommended for final finish of fine Japanese stainless or carbon steel knives. Not necessarily recommended or needed for most German knives (though you could try with a fine slicer I suppose, I wouldn't really recommend this kind of edge for a German santoku or chef's knife since they generally hold up better with a slightly rougher and thicker final edge).
These are excellent stones, very reliable, forgiving, and not fragile. A GREAT choice for the beginner or casual home user who just wants good long-lasting stones that work great on a variety of knives. I use these SuperStone series at home and they're great.
Note: these are now branded "Super Stones" again and now come in a grey box that says "Super Stone"... in 2015 Naniwa re-branded them "Sharpening Stones" for the North American market, but I think they finally realized that didn't make sense so they're gone back to the better-known "Super Stone" name. The photo here shows the old "Sharpening Stone" box, but the one you'll receive will reflect the new "Super Stone" packaging. The stone is the same, just the packaging has changed again.
NOTE: This is a full 2cm thick stone. It has been brought to our attention that other vendors are importing the cheaper 1cm thick version and then not always specifying the thickness on their web sites. Those stones are cheaper, and being half as thick will be more prone to breaking and will not last nearly as long as these normal full-thickness stones! We do NOT and have never imported or sold those cheaper 1cm thick versions of these stones.
Warranty: One-year warranty against manufacturing defects.