Knife Sharpener: The small ultra-fine diamond sharpening stone provides easy, efficient and precise sharpening and polishing. Two options: Double diamond design surface is the best choice. (Coarse grinding 400 grit, fine grinding 600 grit)Portable folding design The folding plastic shell can protect the inner sharpening stone well, which is easy to carry and very suitable for outdoor use . Perfect DesignThe sharpening surface is honeycomb shaped, so it can be sharpened faster and more efficiently than the blade surface. # 39; Oval pencil sharpener. There are scratches on the handle, which can play an important anti-slip role. Scope of applicationVery suitable for outdoor activities. Kitchen knives (metal knives, ceramic knives, scissors, outdoor knives, garden knives, agricultural knives. Features: Material: diamond + plastic Colour: Black Granularity (both sides): 400#, 600# Folded Size: Approx. 12.5 x 3.5 x 1.6cm/4.92 x 1.38 x 0.63inch Extra Length: Approx. 23cm/9.06in Package Included: 1 x whetstone only