General description Ideal for kitchen use and honing smaller workshop tools, the DMT DMT-W6C Diamond Whetstone features a large, wider diamond surface for sharpening a variety of knives and edges. This whetstone is available in a hardwood case and offers a coarse grade of 325 grit (45 micron). Technical specifications Dimensions: 150mm (6in) Grit: 325 (Coarse) Micron size: 45 Material: Hardwood case Other information Supplied in a plastic case fitted with non-skid rubber feet or a wooden box The base of the plastic case may be screw mounted to a bench