Wire Wheel Brush, Bristle Type Crimped Wire, Product Type Wire Wheel Brush, Bristle Material Nylon, Brush Dia. 3 in, Face Width 3/8 in, Bristle Diameter 0.375 in, Bristle Length 15/16 in, Compatible Tool Type Bench Grinder, Pedestal Grinder, Connector Type Threaded Hole, Connector Size 5/8 in, Operating Speed - Maximum 15,000 RPM, Series Gemini