104N Professional 5-In-1 Knife & Scissors SharpenerSHARPAL 104N Professional Knife & Scissors Sharpener is a perfect sharpener for those who own both standard European American style knives and Santoku & other Asian style knives of double beveled edge. Stage 1 uses two preset crossed carbide blades to put a quick edge on knives. Stage 2 uses ceramic blades to hone the fine edge. This sharpener can also be used for serrated blades. Only use stage 2 for serrations. The special shaped tungsten carbide