Easy to use: Two-sided whetstone (Grits 600 and 1500) with rubber base prevents slipping. Size: 7.2 inches in length, 2.4 inches in width, 1.2 inches in thickness Material: White corundum. Instructions to use: 1. Requires submersion 15 minutes in water before use, then put it on a steady surface. 2. First use the #600 grit side for fine grinding in 10~20 degree angle, push the knife out with a little force, and then gently retracted. 3. Then use the #1500 grit side to polish your knife, don't force too much. Attention: 1. Do not only use the middle of the sharpening stone, please make full use of the surface of the whetstone. 2. Do not use whetstone to sharpen serrated blades and ceramic knife. Type Whetstone Material White Corundum .
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