1Made of durable diamond material 2This coarse grinding and fine grinding: 240 mesh -800 mesh. Seal grinding knife, kitchen knife, fruit knife for cutting: 1000 mesh -3000 mesh 3Metal products: rough grinding with 600 eyes, fine grinding with more than 800 eyes. Glass: 400 mesh to not cut, 800 mesh -3000 mesh smooth 413 grit sizes optional. Diamond coated material is more efficient than normal whetstone 5Use for: grinding stone, jade, seal carving knife, wood crafts, metal grinder workpiece, etcDescription:_x005F_x000D_Thin grinding polishing diamond square knife tool sharpening stone whetstone 80 - 3000 grits. Seal grinding knife, kitchen knife, fruit knife for cutting: 1000 mesh ~ 3000 mesh. This coarse grinding and fine grinding: 240 mesh -800 mesh. Use for: grinding stone, jade, seal carving knife, wood crafts, metal grinder workpiece etc. _x005F_x000D__x005F_x000D__x005F_x000D_Features: _x005F_x000D_Made of durable diamond material. _x005F_x000D_13 grits optional. _x005F_x000D_Diamond coated material is more efficient than normal whetstone. _x005F_x000D_Mini sharpener designed. _x005F_x000D_Easy to take for camping and kitchen garden knives. _x005F_x000D__x005F_x000D__x005F_x000D_Specifications:_x005F_x000D_Condition: New_x005F_x000D_Material: Diamond_x005F_x000D_Size: Approx. 17 * 7.5cm / 6.69 * 2.95in_x005F_x000D_Grain Size Options: 80, 150, 240, 320, 400, 600, 800, 1000, 1200, 1500, 2000, 2500, 3000_x005F_x000D_Weight: Approx. 100~110g_x005F_x000D__x005F_x000D_Package Includes:_x005F_x000D_1 x Diamond plate_x005F_x000D__x005F_x000D_Note:_x005F_x000D_1. Please allow 1-2mm error due to manual measurement. Thanks for your understanding._x005F_x000D_2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard._x005F_x000D_3. In order to avoid rust, please wipe the surface of the water stains after using.