Diamond ceramic sharpener that sharpens knives through a 3-stage sharpening process. I accidentally bought this (；^；) - Brand: KAI - Product Name: Diamond Ceramic Sharpener - Features: 3-stage sharpening process - Application: Sharpening knife blades - Materials: Diamond, Ceramic Brand new, unopened. Thank you for looking. Knife sharpener for single-edged knives, single-edged, Kai Seki Magoroku knife sharpener, diamond sharpener, diamond ceramic sharpener 000AP0162, whetstone, sharpener, KAI, made in Japan