I got new Atagoyama lv 4 for knifes it is very very similar as mine but bit smaller size is 208mm 80mm 40mm
I need to say its a ultimate stone for knifes it is very very smooth and finish it leaves, its amazing :)
Perfect stone for single beveled and double beveled knifes.
You can not feel any lines just pure smooth stone. It is on a hard side but still very easy to use.
With very nice chiseled back !!!
Hardness lv 3,5
Fines lv 4,5