Got this for the husband, as his nails are thick and, well... Gnarly. This baby cut through both toenails and fingernails with ease. I do think that the clippers work best on toes without the guard, as it doesn't allow you to cut from all angles with the guard attached. Also, when you are cleaning the clippings out of the guard, do it over the trash can, as it will spill everywhere. Overall, very pleased with the sharpness. Lost a star because the grip inhibits toenail clipping.