AccuSharp 4 in 1 Multi-Tool Knife Sharpener

This pocket-sized sharpener with help you keep a keen edge on any knife or small blade.  It features course, tungsten carbide blades and fine ceramic rods to hone and polish double-sided blades.  It also features a fold out diamond-tapered rod to sharpen serrated edges, as well as a fold out flat diamond file for a continuous sharpening surface. 

Compact and convenient, this little sharpening tool should be in every toolkit.