Search:

I've got them both and I think you are right. I looked at them under 30x and the only difference appears to be the nomenclature printed on the two stones.

Edit; OTOH, the Japanese Grit comparison...

Isn't it interesting that both Naniwa and Shapton have certain stones that are for Japan only and others for export only. I wonder what the rational behind that is ? :confused: Marketing trends ?

I got mine at Dieter Schmid - Fine Tools here. Can't say they are cheap though especially when you add the shipping to the USA but they are 20mm thick.