Depressed Center Wheels, Type 27, 4 1/2 in Dia, 0.5 in Thick, 7/8 in Arbor Hole Size, Norton Abrasives, Mfr#: 66254429268

Non-Woven Depressed Center Disc, Abrasive Material Aluminum Oxide, Grade Medium, Overall Diameter 4 1/2 in, Series Vortex Rapid Blend, Maximum Operating Speed 12,000 RPM, Connector Size 7/8 in, Connector Type Unthreaded Hole, Abrasive Type Non-Woven, Backing Plate Material Fiberglass, Disc Shape Type Type 27