Fiber Disc, Abrasive Type Coated, Abrasive Material Zirconia Alumina, Backing Material Fiber, Backing Weight X, Grit 24, Overall Diameter 7 in, Series BlueFire F826, Maximum Operating Speed 8,600 RPM, Resistance Properties Tear, Connector Size 5/8 In.-11, Connector Type TN, Color Blue, Grade Extra Coarse, Package Quantity 25