Naniwa Coarse Flattening Stone #60

This coarse flattening stone is used to flatten the surface of a whetstone. 

Note this stone is not used for sharpening knives.

Specifications 
Size: 170mmx55mmx30mm
Grit: #60
Weight: 533g

Use & Precaution 
Before using, soak this flattening stone and a whetstone in water for 5mins.