MaterialStainless Steel, Diamond, CeramicSharpening MaterialDiamond, CeramicProduct Size202*60*65mmColorRandomPackageColor BoxCarton Size (master)45*23*25cmQty/ctn36pcsG.W/ctn11.5kgN.W/ctn10.2kgDelivery Time30days after orderUsage: To begin with, place the knife sharpener plainly. 1. Coarse sharpening: for a blunter knife/bladePlace the knife into the diamond sharpening slot, sharpening Back and Forth with moderate pressure can lead to the best sharpening result. 2. Fine sharpening: for honing/polishingA necessary step to elimiante the burrs on the knife.Place the knife into the ceramic sharpening slot, also sharpening Back and Forth. Sharpening approximately once a week at least is recommended. 3. CleaningAfter sharpening, clean the knife with wiper or water, and the knife sharpener with a soft brush or a damp cloth. Caution: 1. Never sharpen the serrated knives/blades and scissors.2. To avoid any accidents, the knife sharpener should be away from children.