Black Friday stone deal from Knives & Tools: Skerper Professional, including adjustable stone holder. I know for a fact that these Skerper stones are made by Naniwa. Skerper Professional sharpening set 220, 1000, 2000, 5000 grit with Sink Bridge - https://www.knivesandtools.co.uk/en/pt/-skerper-professional-sharpening-set-220-1000-2000-5000-grit-with-sink-bridge.htm?smclient=4c41522b-b0b5-11ec-b169-2841c6acdb70&utm_source=salesmanago&utm_medium=email&utm_campaign=UK_20241129_48_NB