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