Friedr. Dick Corp. sharpening steels come in a variety of grits and these have dual sides. They range from coarse cut to fine cut, reg. cut to fine cut, fine cut to polished cut and sapphire cut to polished cut. Each as one has its own purpose giving you the best of both. Some users like the fact of having one sharpener instead of two of different grits. It’s convenient and saves money. Can’t beat that!