Depressed Center Cut-Off Wheel Abrasive Material Zirconia Alumina Connector Size 5/8 In.-11 Connector Type Threaded Hole Grit 60 Overall Diameter 4 1/2 in Overall Thickness 0.045 in Primary Material Applicationn Stainless Steel Steel Compatible Tool Type Angle Grinder Series The Ultimate Cut Wheel Type Type 27 Maximum Operating Speed 13 300 RPM Grade Medium