Item #: 61161535Brand: Tru-Maxx Exact Tooling IR#: 04 Features and Benefits Coated abrasives can be used for most applications, from grinding to polishing. They consist of a thin layer of abrasive adhered to fiber, paper, cloth or rubber. Coated discs are normally used on angle grinders. Compact discs are designed with a trimmable backing that exposes the grains during heavy-duty machining. These discs increase tool life and reduce the amount of equipment changes during an application. They are compressed and compacted at 4 degrees for edge strength. Cooler cutting and more durable than natural aluminum based products, ceramic provides a sharp, high purity grain. Commonly used for precision grinding of steels, hard alloys and exotic materials. Arbors require adapting nuts. They eliminates cross threading. Product Specifications Abrasive Type Coated Flap Disc Type Compact Disc Diameter (Inch) 4-1/2 Abrasive Material Ceramic Grade Medium Grit 40 Attaching System Arbor Center Hole Size 7/8 Backing Material Fiberglass Maximum RPM 13300 Grit (FEPA) 40 Color Red