[KNIFE SHARPENER]: Small and ultra-fine diamond sharpening stones provide easy, efficient and sharp sharpening and polishing. [TWO CHOICES]: Double-sided diamond design for best choice. (Grit 400 as coarse sharpening, Grit 600 for fine sharpening) [PORTABLE FOLDING DESIGN] The folding plastic shell protects the internal sharpening stone well and makes it convenient to carry, perfect for outdoor use. [PERFECT DESIGN] The 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-skid. [APPLICATION SCOPE] It is perfectly suitable for outdoor activities. Kitchen knives (metal knives, ceramic knives, scissors, outdoor knives, garden knives and agricultural knives. Features: Condition: 100% Brand New Material: Diamond + Plastic Color: Black Grit (Double Side): 400#, 600# Folded Size: Approx. 12.5 x 3.5 x 1.6cm / 4.92 x 1.38 x 0.63inch Extended Length: Approx. 23cm /