Made of high-quality diamond, durable and ensure a good sharpening effect The whetstone is small in size, easy to carry, and more effective for sharpening knives Can be used to sharpen kitchen tools, scissors, knives, razors, etc. 400/600 grit double-sided whetstone is suitable for coarse or fine grinding The foldable plastic case protects the inner whetstone well and is easy to carry, perfect for outdoor use describe: This double-sided whetstone is more convenient to use than regular single-sided whetstones. 400 coarse grinding, 600 fine grinding. Portable foldable design when camping or hiking. feature: It is made of high-grade diamond, which is durable and ensures a good sharpening effect. The whetstone is small in size, easy to carry, and more effective for sharpening knives. Can be used to sharpen kitchen tools, scissors, knives, razors, etc. The400/600 grit double-sided whetstone is suitable for coarse or fine grinding. The inner whetstone is well protected by the folded plastic case, making it easy to carry and perfect for outdoor use. notes: 1. Due to manual measurement, please allow 0-2cm error. Thanks for your understanding. 2. The monitor is not calibrated the same, the color of the item shown in the photo may be slightly different from the actual item. Please refer to the actual product. Have a great time shopping!