Sharp 4-in-1 knife and scissor sharpener: the sharpener has 4 compartments, including one for scissors. 3 levels of manual sharpening with diamond, tungsten and ceramic notches, suitable for all ceramic knives and stainless steel for give it its sharp profile after sharpening. High Safety: Ergonomic design makes sharpening much safer. Good grip which allows you to sharpen your knives while keeping your fingers safe. The sharpener is an ideal product to ensure the longevity of your knives, an ally size. For straight edge knives: It is suitable for all types of steel knives with straight edges (not suitable for ceramic knives or serrated blades). Including all steel knives and slicing knives, fruit knives and vegetables. Can choose the sharpening method you want in the sharpener Easy to use: You just need to put them on the sharpener and take it off several times. It will become very sharp, like the new ones. The comfortable handle keeps your hand safely away from the moving blade while throughout the sharpening process.