Feature:1. PREMIUM MATERIAL: This knife sharpening stone is made of high quality jade, high hardness, very strong and durable.2. SIMPLE OPERATION: Beginners can easily set their cutters at the correct sharpening angle, easy to get started; makes everything very easy.3. EASY TO CLEAN: Professional sharpening whetstone, sharpening only needs water, easy to clean, ensure food safety and delicious.4. PRACTICAL AND EFFICIENT: With just one use for lasting sharpness, the complete whetstone kit is available for all your sharpening needs.5. APPLICATION: This sharpening stone is suitable for household kitchen knives, scissors, chisels and axes or other tools that require sharpening.Specification:Item Type: Sharpening StoneMaterial: Jade, SiliconeSize: Approx. 5 x 20cm/2.0 x 7.9inBoron Carbide, Natural White Jade, Natural Green Jade.Package List:1 x Sharpening Stone1 x Silicone CoverNote:Please allow some errors due to manual measurement.