AnySharp Pro Knife Sharpener, Metal Knife sharpener sharpens any knife with diamond precision Sharpens hardened knives (e.g. global, Sabatier) with tungsten carbide tools This knife sharpener also sharpens serrated knives (e.g. bread knives, hunting knives) Very safe hands free sharpener use, power grip suction attaches securely to any flat surface No skill required, anyone can get great results with this knife sharpener