End Brush, Bristle Type Crimped Wire, Product Type Wire Wheel Brush, Bristle Material Carbon Steel, Brush Dia. 3 in, Grit Not Applicable, Bristle Diameter 0.02 in, Bristle Length 1 in, Compatible Tool Type Die Grinder, Drill Press, Pencil Grinder, Straight Grinder, Connector Type Round Shank, Connector Size 1/4 in, Operating Speed - Maximum 20,000 RPM, Color Not Applicable, Series Gemini