Item #: 56007966Brand: Osborn Model #: 0004750900Exact Tooling IR#: 04 Features and Benefits Ceramic provides a sharp, high-purity grain. It is cooler-cutting and more durable than natural aluminum-based products. Commonly used for the precision grinding of steels, hard alloys and exotic materials. Crimped bristle discs are more durable than straight discs. They are commonly used where the impact of a knotted brush would alter the workpiece. Plain hole connectors have a non-threaded hole in the hub of the disc. The disc is attached to the tool with mounting hardware such as a spindle. Product Specifications Outside Diameter (Inch) 6 Grade Fine Grit 80 Abrasive Material Ceramic Brush Type Crimped Connector Type Plain Hole Arbor Hole Size (Inch) 7/8 Trim Length (Inch) 1-1/2 Maximum RPM 2500 Disc Color Blue Filament Shape Rectangle Filament Diameter (Decimal Inch) 0.098