English: Features: 1. Made of natural emerald, very durable and convenient to use. 2. Comes with two drain bases, non-slip and safe to use. 3. Practical and easy to sharpen knives. 4. Super fine whetstone, perfect for sharpening and polishing fine knives. 5. The whetstone is for knives, chef knives, scissors, choppers, and cutting tools. Specifications: Material: Natural Emerald Base Material: Silica Gel Grit Type: 10000 Grit Color: As shown in the picture Whetstone Size: Approx. 200 x 50 x 25 mm Weight: Approx. 800 g Instructions: 1. Soak the stone in water for about 15 minutes before use, salt water is best. 2. Sharpen the knife in the order of coarse first and then fine. English:3. When sharpening the knife, hold the knife handle with your right hand, the fingers of your left hand lightly press on the knife edge, move clockwise. 4. The best sharpening angle is 10-20 degrees. 5. Do not scrape the mud when grinding, the knife can be sharpened more with the mud. Package included: 1 x Whetstone, 2 x Drain Base Note: 1. 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. 2. Only the whetstone and 2 x Drain Base, no other items are included.