So they are stamped (or cut) from the bar and the flat surface that is "knocked out" over the mandrel is rough with all the marks of the cut (which is on can be seen in the product photo). ). suspicious free). I believe that with a good hit they will work well, especially if they are lubricated. Or of course it would also be possible to put them on a grinding machine and finish the surface yourself - but why? A similar set from Grizzly costs about the same and comes well sharpened and ready to use.