1、The whetstone uses water for sharpening the knife, so there is no need for expensive sharpening / grinding oil. 2、There is no need for complicated steps, there will be no confusion when sharpening the knife, and it can be easily cleaned with water. 3、The whetstone is made of professional‑grade materials, which is very durable and long lasting. 4、Exquisite craftsmanship can produce precise mesh whetstones, without damaging the blade, quick ironing, and low wear. 5、We only source premium quality material for the manufacturing of our whetstone which will provide superior cutting. Item Type: Sharpening Stone Material: Natural White Jade Application: Knife Sharpener with Fixed Angle of Grindstone Roughness: 8000 Mesh 1 x Sharpening Stone