A great alternative to a traditional sharpening steel, this manual knife sharpener has diamond and ceramic wheel blades to ensure you achieve a razor sharp edge. It also features a suction cup base which attaches securely to any smooth surface or worktop helping to keep it steady as you slide the blade through. Product features Dimensions 40(H) x 70(W) x 130(D)mm Material Diamond/Ceramic Wheel Rockwell hardness rating 92-99° Weight 110g Colour Black Features a suction cup base which attaches securely to any smooth surface or worktop Not suitable for serrated knives or dishwasher Will ensure all knives perform to the best of their ability