Manufacturer Part Number: 39422|Disc Diameter|4-1/2Center Hole Size|7/8Center Hole Thread Size|Flap Disc Type|Type 29Grit|40Grade|CoarseAttachment Type|Arbor HoleAbrasive Type|CoatedAbrasive Material|Aluminum OxideBacking Material|PolyesterDisc Color|BrownMaximum Rpm|13300Backing Weight|Material Application|Steels; Aluminum; PlasticsMachine Compatibility|For Finish|Abrasive Material Thickness (Inch)|Trimmable|Additional Information|Series|A3Psc Code|UNSPSC Code|31191506