The secret behind the Edge of Glory are the Tungsten Carbide teeth.These teeth, combined with the powerful suction base, will give perfect results every time! Simply lock it with the sunction cup on the base, sharpen, and cut! You will be back to having perfect slices in no time! Using our Edge of Glory Knife Sharpener, no dull knives ruining your perfect cut, no need to replace your costly knife set ! Edge Of Glory Features:Tungsten Carbide teethPerfect slices, every timeLocks to virtually any surfaceBrings your old blades back to life