The Work Sharp Culinary M3 manual kitchen knife sharpener uses a tapered diamond sharpening rod and a 2-Stage ceramic honing rod to achieve incredibly sharp knives. The M3 knife sharpener is designed to be kept in a knife block, letting you easily touch up your knives before you begin a new recipe. A few strokes along the ceramic honing rod before prepping your ingredients preserves the cutting effectiveness of your knives, and extends intervals between sharpening. The Comfort grip handle holds the diamond rod for sharpening, or the ceramic rod for honing. Angle guides are built in for consistent sharpening, and a micro forge Port allows you to cold forge micro-facets along the cutting edge. A micro forge edge enhances cutting performance, extends edge durability, and improves knife control. The M3 is a complete manual knife sharpener for the modern home chef. Work Sharp Culinary is dedicated to supporting our customers. We are happy to answer any questions regarding our kitchen knife sharpeners, micro forge, and any questions you may have about keeping your knives sharp as new.