For rough finishing, if it is not about this hardness, there is no problem because there is no eye on it beautifully. Because it does not wear easily, I think that it is cheap if you consider the price in total even if it is slightly higher.
I was sorry personally because it was harder than I imagined. You can not scratch a narrow place. Also, it hurts to have with bare hands. . . On the contrary, it is convenient to use hardness to coarse rust parts and to scratch paint before peeling treatment.