Manufacturer Part Number: 66254443440|Disc Diameter|4-1/2Center Hole Size|7/8Center Hole Thread Size|Flap Disc Type|Type 27Grit|60Grade|MediumAttachment Type|Arbor HoleAbrasive Type|CoatedAbrasive Material|Zirconia AluminaBacking Material|Poly-CottonDisc Color|BlueMaximum Rpm|13300Backing Weight|Material Application|Steels; Stainless SteelMachine Compatibility|For Finish|Abrasive Material Thickness (Inch)|Trimmable|Additional Information|High DensitySeries|SDPsc Code|UNSPSC Code|31191506