The 475 Steel-Pro from Chef's Choice is designed to replace the hard to use traditional butcher steel. This steeling device is the first commercial of its kind and its rugged cast iron housing is ideal for a commercial environment. It features super-hardened sharpening steels and precise angle guides that ensure perfect results for 20 degree knives. The device maintains its original razor sharp edge as it steels. The Steel-Pro is perfect for chef's, bread, hunting, fillet and pocket knives.