Description: The whetstone is made of professional grade natural stone, which is quite portable. It is used for polishing and sharpening the edges of steel tools and instruments. The stone is flat for working flat edges, with 2 sides of different qualities: 3000# and 10000#. Please use the correct sharpening side for your stoning work. Features: High quality whetstone ensures good sharpening results. The whetstone is small in size, portable and convenient for sharpening more efficiently. Two optional grit sides that you can use for coarse or fine grinding. Two colors on two sides indicate two different grits, red color indicates 3000#. It can be used to sharpen kitchen utensils, scissors, cutters, shaving tools, etc. Specifications: Material: Natural stone Color: Green, White (optional) Grit: 3000# (red side) & 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 best) for 15 minutes before use. 2. Use #3000 grit red side for coarse grinding, use #10000 grit side for fine grinding. 3. Sharpen blades at a 10-20 degree angle to achieve better effect. 4. After sharpening, clean the stone with a damp cloth or water and then dry it. Package Contents: 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, so item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.