Product nameThe Gardening Tool Kitchenware Sharpening Stone Product Features1. Excellent sharpening performance.2. Double side diamond design as 360Grit for coarse sharpen & 600Grit for fine honing.3. Clear plastic cover protects the stone, Molded Plastic Base with Non-Slip Feet for Safety.4. Oval hole design to collect and hold metal chippings.Using Instruction1. Place the stone on a non-slip worktop and make certain that the surface is flat.2. The way of sharpening is decided by the degree of blunt tool.Step one:For coarse sharpening: Used to repair badly damaged blade, suitable for a blunter knife.Start by using the coarse 360 grit of the stone, move the blade back and forth over the stone at an angle of 10 - 30 ° by using light pressure.Generally we advise you to use it with coarse stage for half a year, also depends on the specific situation.Step two:For fine honing; it is a necessary step for the elimination of burr on the knife, and makes the blade smooth and bright.Using the 600 grit of the stone, move the blade back and forth over the stone at an angle of 10 - 30 ° by using gentle pressure.General speaking, use it once a week to keep your blade sharp.3. Clean the knife with the water or wiper and dry it after use; Clean the knife sharpener with non-abrasive brush.Note:1. This product is not suitable for sharpening scissors, serrated knives.2. Suitable to use with sharpening oil or water3. It is normal that the diamond stone is dirty after using.4. Please don’t put sharpener in dishwasher or water5. Please put the knife sharpener and knife beyond the reach of children to avoid any accidents. Sharpening InstructionPackaging