Depressed Center Grinding Wheel Abrasive Material Silicon Carbide Connector Size 5/8 In.-11 Connector Type Threaded Hole Grit 24 Overall Diameter 7 in Overall Thickness 0.25 in Primary Material Applicationn Aluminum Compatible Tool Type Angle Grinder Series Masonry Wheel Type Type 27 Maximum Operating Speed 8 600 RPM Grade Extra Coarse