Compared to ordinary whetstones, cutting ability is not more than twice as much as Date! It is! It is also very good that powder of whetstone does not come out. Because it can not be scraped off other than the disk surface, I like it very much that I can not rub into the base material without rubbing well. Once you try it you will understand the goodness.
It is very handy to shave and crackle. I tried various discs to remove rusting work before painting and stubborn black skin, comparing durability and cost performance, Cubitron Ⅱ is the most convenient for now so far.