Japanese natural sharpening stone whetstone. 
Size: 197-73-28mm 
Weight: 1036g  - 32.7oz
Hardness: ★★★★☆ Mohs3, common 4-
I have tested this Ozaki awasedo stone with razors, knives, and tools and, I feel it is best as ether a fine knife stone, tools chisels or as a prep-bevel stone for razors. I will back up its quality with a money-back guarantee minus the return shipping. 
 
The top surface and all of my stones have been flattened, and the side edges of the top surface have been beveled, This and all of my stones come with an appropriately sized and tested tomonagura slurry stone. The missing corners is reflected in the retail price.