Stone for professional sharpening with a combination of two grains 1000 and 8000, recommended by Global for sharpening the famous Japanese knives. Support/ plastic receptacle perfect as a base for sharpening and putting away after use. Included small and large sharpening guides to guarantee a perfect sharpening inclination for small and large knives. Stone dimensions 21 x 6,8 cm H 2,2 cm. Box dimensions 27 x 8,3 cm H 3,2 cm