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.