Norton Reamer Stone - 6" x 3/4" - 60 Angle. Durable, fast-cutting stones designed for imparting a professional edge on tools, reamers, taps, and rough rounders on shoe machine tools.To improve sharpening & reduce clogging, use with oil Composed of an aluminum oxide abrasive. Oilstone made by Norton, Saint Gobain. Model FT125.