1. Set contents: The set includes 3 whetstones of different specifications, namely 400 grit, 600 grit, and 1000 grit. With sufficient quantity and diverse specifications, it can meet your different needs. These whetstones have both coarse - grinding and fine - grinding functions. 2. Appropriate size: Each diamond whetstone measures 5.9×2.48 inches (length × width). It has a proper size, moderate weight, and a compact volume, making it easy for you to carry. 3. Excellent material: The whetstone is made of diamond material. Its surface is safe, not prone to cracking or fading, and it has good wear resistance and corrosion resistance. You can use it with confidence and it can be used for a long time. 4. Wide range of uses: This diamond grinding plate whetstone can be used to sharpen household kitchen knives, woodworking chisels, jade, seals, carving knives, and for chamfering glass and tiles. The design is practical and user - friendly. 5. Usage tips: After sharpening, be sure to clean the knife. For the best results, use it with water or sharpening oil. Do not put the whetstone in the dishwasher or soak it in water. 6. Color: Silver 7. Material: Diamond 8. Set contents: - 3 whetstones (400 grit, 600 grit, 1000 grit) The set only includes the above - mentioned items, and other items are not included. 9. Precautions: Light and different displays may cause slight differences between the color of the item in the picture and the actual product. A measurement error of ±1 - 3 cm is allowed.