Natural Whetstone I don't know the details, but this is a natural whetstone. A carpenter who worked for 30 years used it, so I'm sure it's genuine, but I don't know how to judge it, so please judge from the images. It can be used or displayed. Please judge the dimensions from the images. #diy #DIY #chisel #chisel #chisel #setofchisels #carpenter #carpentrytools #tools #collection #blades #edge #chisel #setofchisels #chisel #tools #plane #plane #chisel #tools #plane #Kengo Usuzui #Tomoura #Shuji Kogata #sunpachi #sunroku #sunyon #sun #bu #traditionalcrafts #shave #old #new #used #readytouse #mosaku #whetstone #naturalwhetstone #suita #akarenge #renge #naturalstone