Material: Alloy Steel
Four urethane rubbers are attached to the bottom of the plastic case reverse side
High polish power because the hard grains have a high percentage
Feeling of natural grinding adding new compound
Realizes a feeling of a natural whetstone grinding
Can use longer than conventional waterstones
Seems like a great price for a well reviewed whetsone, but not sure if I should wait till prime day or buy now.
Edit: Back on sale
I bought this and a 5000 grit when I was in Japan. great stones