Naniwa Super Stone #12000

If you are looking for a whetstone that can make even the dullest surfaces shine again - then you have found what you are looking for.
Naniwa's Super Stone is the 'top of the line' whetstone that works even when it has not been in water. The density of the stones not only means that it keeps its flat surface for longer, but also that it is 'Splash & Go' - that is, you spray water on the stone and start grinding.

The stone actually works very well as a supplement to the Frederik set and or as a good stone for maintenance, for those of you who just want the sharpest knives always.