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, 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.