Shaptonstone Traditional Homogeneous Waterstones White #120 by Shapton

How does the #120 compare to a dmt xxcoarse? i need something for resetting bevels on chisels and plane irons that's faster than my current xcoarse.

When it will be available again The 120 grit ?

Is the Shapton 120 traditional ceramic? Is it the Pro?

Is this the Japan model or the US export model?