Our aluminum oxide sharpening stone is a 2 sided stone with one coarse grit and one fine grit side. Intended for sharpening all types of edged tools and knives. Ideal size and convenient for bench work. 1000 Grit Side: This grit is a very good overall grit. It is fine enough for many jobs and still have enough abrasive properties to do sharpen knives and tools that are not very dull. If you keep your knives and tools in good shape, you'll find yourself reaching for this grit level often. This grit is also very common for the final stage for many kitchen knives. 4000 Grit Side: This fine grit is able to put an edge on a tool or knife that exceeds just about any commercial edge you'll find. This grit is very fine and sharpen very slowly. This is to be used after you've created an edge with more coarse grits. Usage guide： 1. Soak the stone in the water for 5 minutes, and then put it on a steady platform such as a table. 2. Hold the knife at an angle of 10 - 30 °, grind the edge on the surface of #1000 grit side back and forth with gentle pressure, for about 15 minutes. 3. Then use the #4000 grit side for fine grinding, for about 10 minutes. 4. Wipe the knife with wet cloth or rinse it with water after sharpening, and then dry it. 5. Clean the stone surface with a soft brush and put it in the air. 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. 3. Protect the stone well and avoid it falling from the height. 4. Sharpening result would be much better when used with any sharpening oil. 5. Please put the knife sharpener and knife beyond the reach of children. Packing List: 1*Double-sided whetstone 1*Anti-slip gel silica base
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