Scotch-Brite EXL unitized wheels feature a soft, conformable consistency that effectively smoothes, deburrs and finishes the edges of metal alloys, as well as many plastics and composites. There are a variety of densities and grades starting from a very soft 2 density for applications requiring a conformability to a hard, aggressive 8 density for maximum cut and durability. - Wheel edge can be dressed for effective deburring, finishing and polishing of all metal alloys and many plastics and composites. Tough, layered, unitized construction can operate clockwise or counterclockwise directions.