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