KNIFE SHARPENER: Small and ultra-fine diamond sharpening stones allow for easy, efficient and sharp sharpening and polishing. TWO CHOICES: Double-sided diamond design for the best choice. (400 Grit as coarse sharpening, 600 Grit for fine sharpening) PORTABLE FOLDING DESIGNFolding plastic shell protects the internal sharpening stone well and makes it convenient to carry, perfect for outdoor use. FIELD OF APPLICATION It adapts perfectly to outdoor activities. Kitchen knives (metal knives, ceramic knives, scissors, outdoor knives, garden knives and agricultural knives. PERFECT DESIGNThe sharpening surface is honeycomb, so it can be sharpened faster and more efficiently than the oval sharpening surface. Stripe is on the handle which can play an important role in anti-skidding. Folding Double-Sided Knife Sharpener Features: The sharpening surface is honeycomb, so that can sharpen more quickly and efficiently than the oval sharpening surface. On the handle is a strip, which can play an important role in anti-slip. The fan-shaped and collapsible construction provides excellent stone protection and prevents damage. It is very suitable for outdoor activities. Kitchen knives. (Metal knives, ceramic knives, scissors, outdoor knives, garden knives and agricultural knives. Specifications: Material: Diamond + Plastic Color: yellow Grit (double-sided): 400 , 600 Folded Size: Approx. 12.5 x 3.5 x 1.6cm / 4.92 x 1.38 x 0.63inch Extended length: approx. 23 cm / 9.06 inch Package included: 1 x whetstone only