Simply running the blade of a kitchen knife along this sharpener can easily restore its sharpness. This diamond-coated handy sharpener features a dual-sided design, perfect for kitchen knives and portable use. It has two grit sizes: coarse (#600) and fine (#1200), allowing you to choose the appropriate grit for your needs. It can sharpen various blades, including regular kitchen knives, ceramic knives, pocket knives, and scissors. Industrial-grade diamonds are electroplated onto the sharpener, providing several times better sharpening performance compared to conventional steel whetstones or ceramic sharpeners. This item was stored in a kitchen drawer. I am selling it because I no longer plan to use it. Although it is unopened, please understand that it is a used item before purchasing. It has been stored at home for a long time. There may be some dirt and scratches on the packaging. Please be aware of this. Please refrain from purchasing if you are sensitive to minor imperfections or if you are seeking a perfect item.