Search:

From what I have seen they are silicon carbide oilstones, but I can not find their grit rating. I have seen one rated in at about 600, but have no way of knowing which grit it is.

The problem seems to be that the common india and arkansas stones just don't put a fine enough edge on, and very little of the honeing needed for razors is on the grits of those stones.

So they...