Manufacturer Part Number: DW8904COMBO|Wheel Diameter (Inch)|4-1/2Wheel Thickness (Inch)|Wheel Thickness (Decimal Inch)|0.0450Hole Size|7/8Hole Thread Size|Wheel Type|Type 27Abrasive Material|Zirconia AluminaGrit|46Grade|CoarseMaximum Rpm|8500Connector Type|ArborBond Type|ResinoidWheel Hardness Rating|Hardness Code|Wheel Color|Friable|Reinforced|Tool Compatibility|Material Application|Series|Contents|Flexible|Specifications|Additional Information|Psc Code|UNSPSC Code|23131503