Pro Series – Pull-Thru Manual Knife Sharpener. 10 1/2″ overall. Gray and yellow composition housing with soft grip handle. 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. Sharpens 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 the knife through the appropriate slot(s). .