Item #: 48967459Brand: Camel Grinding Wheels Model #: 30142Exact 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. More durable than aluminum oxide, zirconia-alumina is best for medium- to heavy-material removal. The material grains constantly fracture to produce new sharp edges. Commonly used on carbon steels, aerospace alloys, nickel alloys, aluminum, cast iron, forgings and some stainless steels 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 Zirconia Alumina Grade Medium Grit 40 Attaching System Arbor Center Hole Size 5/8-11 Backing Material Poly Cotton Maximum RPM 13300 Series Z3 Color Blue Disc Diameter (Decimal Inch) 4-1/2