Manual Diamond Rolling Knife Sharpener SetManual Diamond Rolling Knife Sharpener Set Maintain razor sharp blades in your kitchen with the Manual Diamond Rolling Knife Sharpener Set. Designed for both professional chefs and home cooks, this sharpening system provides consistent and controlled sharpening. Equipped with a diamond coated sharpening wheel, the rolling mechanism delivers even pressure and smooth motion that replicates a professional sharpening effect without damaging your blades.