Description: This sharpening stone is made of sturdy materials to bring you a good grinding results. There are various grits for the stoning choices, such as 3000# and 10000# for fine sharpening, while 80# and 500# for relatively coarse grinding. Certainly, according to different grits, you can get various corresponding colors of green, red, black, white and so on. In addition, this sharpening stone can be used to sharpen kitchen knives, scissors, cutter, shave knife, etc. Features:1. Made of premium whetstone, it brings a good sharpening results.2. Various grits for the stoning choices, such as 3000# and 10000# for fine sharpening, while 80# and 500# for relatively coarse grinding.3. One sharpening stone with two grinding sides, can use for a long time, small in size, portable and easy to use.4. Anti-friction function to make the grinding more effectively and conveniently.5. Can be used to sharpen kitchen knives, scissors, cutter, shave knife, etc.Specifications:Material: White Corundum, Natural Agate, Ruby, Boron Carbide, Silicon ChlorideGrit Type: 10000#(Light Green, White), 3000#(Red), 800#(Black), 500#(Gray), 80#(White)Size: 100 x 50 x 10mm/4'' x 2'' x 0.4''Quantity: 1pcPackage Weight: 119-188gInstruction:1. Soak the sharpening stone in water(salt water is better) for 15 minutes before use.2. Do the coarse grinding firstly and then get the fine grinding done for a better result. 3. Sharpening blades in a 10~20 degree angle would reach a better effect. 4. After sharpening the knife, clean the knife with wet cloth or water, then dry it.Package Included:1 x Sharpening StoneNote:1. Please allow 0~1 inch error due to manual measurement. Thanks for your understanding.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.