HORL 3 OakSharp, sharper, mirror sharp with the HORL 3 and interchangeable grinding discs you have many options. In combination with a constant grinding angle, the diamond and ceramic discs deliver impressive results. 15 produces a fine cutting edge typically used for Japanese knives, and 20 for a stable cutting edge suitable for most Western style knives Made in Germany from solid Oak, the HORL 3 knife sharpener is efficient, precise, and built to last a