These spiral cutters are best for groove or deep groove cuts as they are better at removing debris from the cut. They perform much better in these applications than traditional straight flute cutters which do not efficiently remove debris and result in a slower cut and more heat build-up on the cutter, leading to faster edge dulling and reduced cutter life. This bur delivers the same high quality of cut and finish as most Freud burs. It's worth paying extra for.