4-in-1 Knife & Tool Sharpener. Measures 4 1/8" overall. Combines every sharpening necessity into one pocket-sized unit. Featuring coarse tungsten carbide sharpening blades that sharpen all types of steels, fine ceramic rods hone and polish your blade, retractable diamond-tapered rod used for deep serrations with groove for all of your hooks and darts and retractable flat diamond stone for users who prefer a continuous surface for their sharpening needs. Composition housing with black molded rubber feet to keep the unit steady while in use. Hang packaged.