: The sharpening stone is made of professional grade natural stone, which is quite portable. It is used for grinding and sharpening the edges of steel tools and instruments. The 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 quality sharpening stone ensures good sharpening results. The sharpening stone is small in size, portable and convenient for sharpening more efficiently. Two sides of grits optional that you can use for coarse or fine grinding. Two colors of two sides indicate two different grits, red color indicates 3000#. Can be used for sharpening kitchen utensils, scissors, cutters, shaving tools, etc. Specifications: Material: Natural Stone Color: Green, White (optional) Grit: 3000# (red side) and 10000# (the other side) Item Size: 100 x 25 x 10mm Quantity: 1pc Weight: 86g (approx.) Instructions: 1. Soak the sharpening stone in water (salt water is better) for 15 minutes before use. 2. Use the red side with grit #3000 for coarse grinding, use the side with grit #10000 for fine grinding. 3. Sharpen the blades at an angle of 10 to 20 degrees to achieve better effect. 4. After sharpening, clean the stone with a damp cloth or water, then dry it. Package Content: 1 x Sharpening Stone 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.