SharpenerSmall and ultra-fine diamond sharpening stone, can sharpen and polish knives easily, effectively and sharply. Two OptionsDouble-sided diamond design, the best choice (400 grit for coarse grinding, 600 grit for fine honing)Portable Folding DesignFoldable plastic tray protects the internal sharpening stone well, easy to carry, perfect for outdoor use . [Features] The sharpening surface is honeycomb, which is faster and more efficient than elliptical sharpening. The handle is striped and has a strong anti-slip effect. Scalloped and collapsible construction provides excellent stone protection and prevents damage. Scope of applicationSuitable for outdoor activities. Kitchen knives (metal knives, ceramic knives, scissors, outdoor knives, garden knives and agricultural knives).