1.Material:Natural corundum whetstone with 2 different side,a coarse side (5000)and a finer side (10000).2.Structure: Antiskid silica gel and bamboo base, beautiful and environmental, the most important is anti-skid, ensure the safety of sharpening, The angle guide helps to precisely position the angle of the tool, so you don't have to worry about hurting yourself.3.It is versatile and it is very durable and durable. You can grind any blade, such as kitchen knives, hunting knives, pencil sharpeners, carving knives, scissors, razors, etc. It can even polish the axe!4.Easy to use, water is used as a lubricant for the sharpening stone, so it does not require expensive sharpening oil and is easily washed with water after grinding.[Instructions]:1. Soak the oil stone in water for about 15 minutes.2, in one direction, the intensity of the even grinding, the angle of 10%-20% is the best.3. Do not scrape the slurry after grinding the knife. If there is slurry, the knife can be sharpened.4. After the tool is ground, remember to wipe it with a damp cloth or rinse with water and dry it. Use a soft brush to clean the surface of the stone and let it dry in a ventilated place.[Precautions]:1. Fully use the entire surface of the oil stone when sharpening the knife to maintain the consistency of the surface of the oil stone.2. Pay attention to protect the oil stone during use to avoid falling from a height.3. Do not place the sharpener and the cutter in a place that is easy for children to reach to avoid accidents.4.Please add water properly in the process of sharpening to keep humidity of the stone.5.Please don't use it on serrated and ceramic knife.6.Due to the different batches, the color of the bamboo base will be slightly different, whichever is the real thing!Colour:Yellow + WhiteMaterial:White corundum + bambooSize:18x3x6cmPackage Contents:1 * Double-sid