This professional manual three-stage knife sharpener has an elegant look and compact footprint and delivers ultra-sharp edges for all quality knives, including fixed-edge kitchen and household knives, Santoku knives, sport and pocket knives, and serrated knives. It will restore quickly and easily The cutting edges of traditional European and style knives are 20 degrees and the cutting edges of Asian style knives and modern European/style knives are 15 degrees. Using 100% diamond abrasive, precise angle control, and an advanced sharpening system creates an ultra-sharp double-bevel edge that is stronger and more durable.