Specifications: Material: Natural Strop Stone Color: Black Grit Type: 5000 Grit Size: Approx. 100 x 40 x 15mm / 3.94 x 1.57 x 0.59inch Weight: Approx. 175g Directions: 1. Soak the stone in water about 15 minutes before using, saltwater is better. 2. Sharpen the knife in the order of the first rough then precise. 3. When you sharpen the knife, hold the handle of the knife with the right hand, left hand fingers are lightly pressed to the edge of the knife, move in a clockwise direction. 4. The sharpening angle is best from 10 to 20 degrees. 5. Do not remove the seriflux, which is helpful for sharper knives. Package Include: 1 x Natural Whetstone Note: 1. This kind of grindstone is made of natural materials, and it is inevitable that the corners are slightly blemished, but they have been polished and smooth, which will not affect the use. Please feel free to purchase. 2. Only grindstone, other stuff in the picture NOT included.