The sharpening stone is made from professional grade natural stone, which is quite wearable. It is used to grind and hone the edges of steel tools and implements. Stone is flat for working flat edges, with 2 sides of different grades: 3000# and 10000#. Use the right sharpening side for your stoning work. Features: High-grade sharpening stone ensures good sharpening results. The sharpening stone is small in size, portable and convenient to sharpen more effectively. Two optional grits sides you can use for either coarse grinding or fine grinding. Two colors of two sides indicate two different grits, the red color indicates 3000#.Can be used to sharpen kitchen tools, scissors, cutter, shave tool, etc.Specifications: Material: Natural stoneColor: Green, White(Optional)Grit: 3000#(red side) and 10000#(the other side) Item Size: 100 x 25 x 10mm / 3.93 x 0.98 x 0.39"Quantity: 1pc Weight: 86g(approx.)Instruction: 1. Soak the sharpening stone in water(salt water is better) for 15 minutes before use.2. Use the #3000 grit red side for coarse grinding, use the #10000 grit side for fine grinding. 3. Sharpening blades in a 10~20 degree angle would reach a better effect. 4. After sharpening, clean the stone with wet cloth or water, then dry it. Package Includes: 1 x Whetstone Note:1. Please allow 1-3mm 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.