Outdoor Edge Edge-X Pro Three Stage Sharpener Plus Diamond Rod. This Outdoor Edge Sharpener features: --Coarse carbide to remove metal quickly and to reshape a dull edge. --Medium ceramic is stage to in the process and is less abrasive than carbide. --Fine ceramic if for finishing the edge and touch-up after each use. --Use diamond rod to sharpen serrations. Slot in diamond rod sharpens fish hook points. --Pivoting "X-Base" for durability and safety. Easy to carry in glove box or tool box. Stores easily in kitchen door. PRC