Description:The sharpening stone is made of professional diamond, which is quite handy. It is used for grinding and perfecting the edges of steel tools and tools. The stone is flat for working with flat edges and is available in 3 different grades: 300#, 600# and 1000#. Choose the right sharp stone to stone, or you can get all three to keep the edges of the tools sharp. Features: The high-quality sharpening stone ensures good sharpening results. The sharpening stone is small, portable and convenient for sharpening more effectively. There is a base that keeps the stone firmly installed on the sharpener while sharpening. Three optional grit can be selected either coarse grinding or grinding. It can be used to sharpen kitchen tools, scissors, knife, shaving tool, etc. Specifications:Abrasive: Diamond Base Material: Plastic Grit: 300#/600#/1000# (Optional)Product Size: 150x20x5mm/5.9x0.8x0.2" Quantity: 1pcWeight: 41g (Approx.) Instruction:1. Soak the sharpening stone in water (salt water is better) for 15 minutes before use.2. Use #300 grit stone for coarse grinding, use #600 and #1000 grit stone for grinding.3. Sharpening the blades at an angle of 10 - 20 degrees would achieve a better effect.4. After sharpening, clean the stone with a damp cloth or water, then pat dry. Package Included:1 x WhetstoneNote:1. Please allow 1-3mm error due to manual measurement. Thank you 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.