A perfect manual sharpener for those who own Asian and European/American style knives and want to quickly and easily apply a superior, razor-sharp edge. The ProntoPro is the fastest Chef's Choice manual sharpener for applying 15 degree edges for Asian style knives and 20 degree edges for European/American style knives. Using precise angle guides and 100% diamond abrasive wheels, the ProntoPro sharpener provides a super-sharp, durable, arch-shaped edge with lots of "bite". A separate honing stage polishes the edge for flawless performance. The ProntoPro sharpens all quality knives including straight edge household and kitchen knives, Santoku, sports and pocket knives, as well as serrated knives. Engineered and assembled in the U.S.A.