What is the best knife sharpener?

Sharp knives, it's Cutco Cutlery's signature. You'll be sharpening your straight-edge knives like a pro with Cutco's sharpener and step-by-step instructions that will show you the best way to sharpen your knife. It's easy. Whether your straight-edge knives need a light touch up or serious sharpening, Cutco's sharpener will leave your knives sharp and ready for the next use.