General description The DMT DMT-W6FP Diamond Whetstone is a 150mm (6in) sharpening tool designed for kitchen use and honing smaller workshop tools. It features a large diamond surface that is ideal for sharpening a variety of knives and edges. The whetstone comes in a red plastic case equipped with non-skid rubber feet, and the base can be screw mounted to a bench for stability. Technical specifications Dimensions: 150mm (6in) Grit: 600 (Fine) Micron size: 25 micron Other information Available grades: Black (Extra Coarse Grade 220, 60 micron), Blue (Coarse Grade 325, 45 micron), Red (Fine Grade 600, 25 micron), Green (Extra Fine Grade 1200, 9 micron)