Dual surface diamond sharpening stone grit 150 and grit 600. Use wet or dry to sharpen all types of metal knives including ceramic knife. Heavy and stable in use. Warp free as metal plate infused with diamond is 8mm thick. A flat surface ensures knife angle is not altered when sharpening with a guide or free hand. Start sharpening with coarse surface ending with finer grit.
Wipe dry after wet use and until completely dried only then cover for storage. Kneadable eraser rub over diamond surface pick up metal particles removed during dry sharpening.
