Item #: 56275167Brand: Norton Model #: 66261020628Exact 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. Type 27 flap discs are less aggressive and are used primarily on flat surfaces for grinding a smoother finish. Ceramic alumina is suited for general purpose deburring and blending, It is commonly used on ferrous alloys, high tensile materials and wood. Arbors require adapting nuts. They eliminates cross threading. Product Specifications Abrasive Type Coated Flap Disc Type Type 27 Disc Diameter (Inch) 4-1/2 Abrasive Material Ceramic Alumina Grade Coarse Grit 40 Attaching System Arbor Center Hole Size 7/8 Backing Material Cloth Maximum RPM 13000 Series R980P Color Orange