Japanese Natural Whetstone Omura / Omurato Coarse Arato #150 Wkakayama 3900g

Japanese natural whetstone finishing whetstone

Rust remove, knife chipo repair, making flat of natural whetstone, before middle whetstone, etc. Model Mesukito, Omurato, Wakayama Prefecture, Japan. But now can use and works great for flatten whetstone, removing scratches/ scuffs of even finishing whetstone.