Norton Combination India Stone Sharpener 4in. x 1 3/4in. x 5/8in. NTIB134. Reputed by users of all types for its superior sharpening performance Norton Fa Fa's trademark curved edges are ideal for sharpening to a fine razor like finish. Norton India Stone & Fa Fa Sharpener can be operated with one hand and will sharpen even the dullest of knives. Fa Fa - The Japanese water stone is parallel edged and has a long curved shape. Its long curved shape allows users to hold the stone against the edge of their knife while sharpening. Compatibility - Works with all Norton Yatagan Ken Onion and other full size Norton style scissors. Package Contents: Norton Combination India Stone Sharpener Norton NTIB134: Combination India Stone Sharpener 4in. x 1 3/4in. x 5/8in.