Now you can maintain your Kai wide and reversed Scallop serrated knives at home. The serrated pull-through sharpener is designed to be used with Kai Cutlery with serrations, such as bread knives and ultimate utility knives. Gently pull the knife through the sharpening slot and you'll return your serrated knives to top performance. Ideal for pure Komachi 2, pure Komachi HD, Luna, wasabi, and inspire.