KITCHEN KNIFE SHARPENER: Dual-grit for consistent sharpness, the Shun Combination Whetstone Knife Sharpener is expertly designed to keep your knife collection in pristine condition. DUAL-GRIT DESIGN: This biface whetstone features 2 grits: a coarse 400-grit side and fine 1000-grit side ideal for sharpening your Shun knives when they’re very dull. To put on the final polish, try our 1000/6000-grit whetstone. EASY TO USE: Start with the 400-grit side to quickly remove material and put on a new edge, then switch to the 1000-grit side to smooth and finish the edge. Soak stone in water before use. RELIABLE STABILITY: This whetstone is designed for stability and comfort during use, featuring an included rubber tray which holds the whetstone firmly in place for an optimal sharpening experience. JAPANESE CRAFTSMANSHIP: Each Shun knife is meticulously handcrafted in Japan, reflecting a legacy of traditional knife-making expertise and a dedication to superior quality.