Wusthof Key Chain Sport Sharpener
Fits on your keychain for on-the-go knife sharpening.
Features a two stage sharpening system. Stage 1, the carbide side, sets the blade's edge, while Stage 2, the ceramic side, finishes the edge. A rubber grip on the bottom of the sharpener keeps it from slipping during use. Model also features a fishhook sharpener.