The Cuisine::pro® Damashiro® 2-step sharpener combines honing and sharpening into a one, easy-to-use tool. It features a diamond wheel to sharpen and restore the blade edge and a ceramic wheel to refine it - well suited to maintaining precision and performance. Non-slip rubber feet ensure added stability and safety while sharpening. The blade is made from Japanese stainless steel 420J2, measured at 53 on the Rockwell hardness scale. Handle construction: One-piece seamless stainless steel. Hand wash with mild soap and warm water, then rinse and dry immediately. Do not place in the dishwasher. Backed by the Cuisine::pro lifetime warranty. Recommended uses: Maintaining Knife Edge.