1. Large Sharpening Stone: Total size: 285mm x 55mm x 20mm / 11.2' x 2.2' x 0.8' (LWT); doublesided diamond: 400 grits (coarse grinding) / 1000 grits (fine grinding). Diamond abrasive is hard and has strong wear resistance to sharpen knife and hard materials. The honeycomb pattern design ensures that the dust generated during the grinding process will not affect the sharpening effect. 2. 5in1 Multi Use: Whetstone is divided into 400 coarse grinding on the front for repairing severely blunted blades and quickly sharpening the edge, and 1000 fine grinding on the back to make the edge smooth. The groove in the middle of the whetstone handle is used for scissor grinding; the left waist of the handle is a tungsten steel blade, which is suitable for sharpening, and the right waist of the handle is a ceramic blade, which can polish and eliminate burrs on metal blades. 3. Wide Applications: Sharpener stones are suitable for sharpening a wide range of knives and cutting tools, including kitchen knives, hunting knives, scissors, wood chisels and more. The knife sharpener is versatile enough to sharpen various tools, ensuring they remain sharp and functional for different tasks. 4. Usage: Unlike other whetstones that need to be soaked and wait for a long time, this whetstone allows you to sharpen the knife immediately without any preparation! If you need to sharpen the knife continuously for a long time, please sprinkle some water continuously to cool it down and prevent overheating from damaging the blade.