I bought it for cutting of the protruding nail of the demolished wood. I think that it is effective for the stepping out accident of the nail, but the cutting surface remains about 2 mm, which is also quite sharp, so it is not safe unless it is handled with a hand grinder or the like. After that the cutting ability is up to 5 mm, but it seems that it is quite powerful even if it is 4 mm in diameter even if it cuts at the root, because I was not powerful, I felt that 3 mm diameter is appropriate.
I am pleased that the degree of curvature is perfect for our purpose. But teeth do not last long. I use it while paying attention so as not to lack. It is not ecological to buy a set than to buy a blade (laugh)