#1 Kamisori toishi. This truly is a well used razor hone, attached to a gloss black wooden base. I have honed 3 different kamisori and one Henckels Friodur on this stone and each blade turned out barber sharp. The price reflects the thinnness of the stone, not the quality.
210 x 62 x 12 to 8mm at its thinnest
Speed 8+ to 9+ w/slurry
#1 Kamisori Kiita thin razor hone
All of my stones come with a tested tomonagura, and a 4week money back guarantee. Free Shipping for stones over $300,
Also if you are in the San Francisco Bay area I do have an Open Sharpening Toishi Dojo if you would like to stop by and learn about sharpening by trying and comparing stones one to the other. Bring your tools and razors.