Stored by a Japanese carpenter before.

Omurato is,

For my personal impression,

Hardness: 1.5-2 of 5.

Grit#150-200.

Extra large size .

About 8.6x2.7x2.5in

About 222x70x65mm

Two available in stock, thus the actual size may be slightly different.

And this kind of natural whetstone, some tips , scratches, side damage etc are normal. Thank you for your comprehension.

Some dirt, cracks on the back, but I think still can use this natural whetstone for a long time.

For damaged blade, repair , making flat for natural whetstone etc,

If you have razor damaged, this natiural whetstone works for the first process. I uploaded some example photos of damaged razor to be finished first process. ( Blades damage removed, sharpen each sides, then after please continue to like #500 to #1000, #3000, 5000,#8000 or more like #12000 synthetic whetstone or natural finising whetstone. )

That is , this natural whetstone works for damaged razor to be honed.

Omurato natural Japanese whetstone is one of great whetstone , especially for the first process of sharpening katana, Japanese sword.