Scotch-Brite EXL Unitized Wheel, Silicon Carbide, 6" Diameter, 4500 rpm, 1" Arbor, Medium Grit (Pack of 1)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 Densities and grades ranging from soft and conformable to hard and aggressive offer utility for a wide variety of applications Resists smearing for cleaner surfaces and less preparation Minimizes heat build up to lessen impact on heat