Easy to use: double-sided sharpening stone with rubber base to prevent slipping. Suitable for almost straight razor, precision tool, planer and chisels. Note: Choose the grit you need. The smaller the grain, the more you grind.Dimensions: 18 cm in length, 6 cm in width, 3 cm in thickness.Material: white corundum.< /li>How to use: 1. Requires immersion 15 minutes in water before use, then put it on a stable surface. 2. Start by using the small grain side for fine sharpening at a 10-20 degree angle, push the knife in with a little force, then gently retract. 3. Then use the coarse grain side to polish your knife, do not use too much force.Attention: 1. Do not only use the middle of the whetstone, please make full use of the surface whetstone. 2. Do not use a whetstone to sharpen serrated blades and ceramic knives. Item Description: Contents: 1000-6000 1x Sharpening stone (Note: other accessories are not included). Features: Type: whetstone Material: white corundum. Subtype: double-sided whetstone.