The accusharp diamond rod sharpener is an unbreakable diamond-coated steel rod used to sharpen all kinds of knives, including serrated edges.The retractable rod is engineered with a cone-shaped end for use on serrations and tight spaces.The diamond-coated steel rod also has sharpening grooves for use with all kinds of hooks, darts and pointed objects and comes complete with a shirt pocket clip for easy storage.*note- product comes with one diamond coated rod.Image displayed shows both tapered and round rod for a visual representation.Sharpener Material: Diamond