The AccuSharp® 4-in-1 Knife and Tool Sharpener combines every sharpening necessity into one pocket-sized unit. Featuring coarse tungsten carbide sharpening blades and fine ceramic rods, the unit also comes with a retractable diamond-tapered rod used for deep serrations. * * The rod also has a groove for all of your hooks and darts. Plus, the unit comes with a retractable flat diamond file for users who prefer a continuous surface for their sharpening needs. The model is finished off with molded rubber feet to keep the unit steady while in use.