1、Double-sided sharpening design(3000 grit coarse grinding and 8000 grit fine grinding Features: Double-sided sharpening design(3000 grit coarse grinding and 8000 grit fine grinding. - Equipped with silica gel non-slip base guarantee the safety sharpening. - Size:180*60*27mm Using Instruction: 1. Soak the stone in the water for 5 minutes, and then put it on a steady platform. Sharpening the knives with one or two steps is decided by the degree of blunt tool. Step 1: 3000 grit coarse grit, used to repair the seriously damaged edge, suitable for blunt knives. Hold the knife at an angle of 10 - 30 °, grind the edge on the surface of stone back and forth with gentle pressure, and sharpen it until the edge sharp enough. After sharpening the tool, it needs to be honed with coarse grinding after half a year. Also depends on the specific situation. Step 2: 8000 grit fine grinding, a necessary step to eliminate burrs of the edge. Use more gentle pressure, repeat step 1, and repair the edge until smoothly and keenly. General speaking, use it once a week to keep your blade sharp. 2.Please wipe it with wet cloth or rinse it with water after sharpening the tool, and then dry it. Clean the stone surface with a soft brush and put it in the air to make it dry. Caution: 1. Please use the whole surface of stone to keep the consistency when sharpening knives. 2. Protect the stone well and avoid it falling from the height. 3. Sharpening result would be much better using with sharpening oil. 4. Please put the knife sharpener and knife beyond the reach of children to avoid any accidents. Package Included: 1 pcs x 3000&8000 Grit Knife Sharpener Whetstone