Chef's Choice 0170000 Chef's Choice700 Ceramic + Steel Diamond Hone Electric Knife Sharpener, White Professionally sharpen CERAMIC and STEEL knives in one sharpening system! Totally safe for all quality knives Astonishing sharp edges for kitchen, household, fish fillet, pocket and serrated knives-Ceramic and Steel knives Diamond Ultra Flex finishing stage for a super sharp, microscopically flawless, durable edge Repairs chipped edges on ceramic knives, quickly restores a razor sharp, factory grade edge Precision flexible spring guides for accurate control of angle