Kanpeki 10" Diamond Sharpening RodPreserve your knives' cutting edge to perfection with this exquisite, #500 grit diamond Sharpening Rod. It's a must have for any dedicated chef or home cook, able to finely hone your Seido Knives and an array of other blades. Unboxing the Sharpening Rod: Video Demo & Features Why sharpen your knives? Despite popular belief, dull blades can be more dangerous than sharp ones. When slicing meat or tough veggies with a dull knife, you must use extra force