The Adjustable Angle Pull-Thru Knife Sharpener offers new, innovative features never used on a manual knife sharpener and functional performance. This sharpener offers two stages of sharpening (COARSE and FINE) for all types of straight edge knives with a grind on both sides of the blade and a fixed-angle slot for sharpening serrated edge blades. It will sharpen a wide variety of knives by simply adjusting the angle of the abrasive components to match the angle of the original factory grind. Just turn the dial to one of the 6 angles offered, then pull your knife through the appropriate slot(s). Angle Adjust(TM) knob that allows the user to adjust the angle of both the coarse and fine sharpening slots at the same time. Two Adjustable manual sharpening slots Coarse featuring diamond stones to sharpen dull and damaged knives Fine offers ceramic stones for finishing the edge and light touch-ups The serrated fixed-angle slot with crossed ceramic stones designed to sharpen into the serrations of the knife Soft-touch handgrip; Non-Slip base for added stability