Sorry out of stock now.
Shapton ceramic series above #5000 grit are seriously the best among the variety of stones from different makers we have tried in the past years.
A very hard material protects from wearing and edges become razor sharp with mirror polished finish.
This is a starting stone for polishing and your knife need to have edge before being put on finishing stone.
By finishing with # 8000 for carbon steel knives or # 12000 for stainless knives to complete the extreme sharpness.