Features: 1. Fold the knife sharpener to reduce the risk of edge damage. 2. Rough surface is more effective than water stone. 3. Light weight, compact storage, convenient carrying and easy use. 4. Widely used in outdoor knives, scissors, gardening tools, etc. 5. Two sides: coarse sand (360-400 mesh) and fine sand (600 mesh) Specification: Size: Closed: 12.5*3.5*1.6cm Unfolded length: 23cm Material: plastic Packing: OPP bag Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-2cm measuring deviation due to manual measurement. 3. 360-400 meshes can be used for cutting edges, or the thickness of very dull blades can be quickly thinned, and 600 meshes can be used for sharpening and setting blades. 98% of sharpening work can be done with 600 meshes of grindstone. Included: 1 X Folded Sharpener