Naniwa Super Stone 12,000 Grit Japanese Whetstone Sharpening Stone, NO Stand, 21cm x 7cm surface, 2cm thick.
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.
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). Note: these are the new "Sharpening Stone" series from Naniwa which replace the old "Super Stones". They have different packaging, but the stones themselves look and feel very, very similar, and are the same size as the old Super Stones. They are still very much high end stones, but are one step down from the top of the line Chosera (now rebranded "Professional Stones") which use a different bonding method for a somewhat nicer feel and faster cut, but at the expense of higher prices and more fragility. I use the SuperStone/Sharpening Stone series at home and they're great.
Warranty: One-year warranty against manufacturing defects.