This professional manual 3-stage sharpener applies a super sharp edge on all quality knives including straight edge kitchen and household knives, Santoku knives, sports and pocket knives and serrated knives. It will quickly and easily restore the traditional 20 degree edge on European and American style knives and a 15 degree edge for Asian style knives. Using 100% diamond abrasives, precise angle control and an advanced sharpening system, it creates a super sharp, double beveled edge that is stronger and more durable. The Angle Select sharpens the entire blade length, from tip to bolster, with no guesswork. Featuring an ergonomic handle to fit all hands, it can be used right or left-handed. The slip resistant rubber feet hold fast to the work surface. Engineered and assembled in the U.S.A.