Wire Wheel Brush, Bristle Type Standard Twist Knot Wire, Product Type Wire Wheel Brush, Bristle Material Carbon Steel, Brush Dia. 3 1/4 in, Grit Not Applicable, Face Width 3/8 in, Bristle Diameter 0.014 in, Bristle Length 5/8 in, Compatible Tool Type Angle Grinder, Die Grinder, Pencil Grinder, Straight Grinder, Connector Type Round Shank, Connector Size 1/4 in, Operating Speed - Maximum 25,000 RPM, Shank Length 1/4 in, Color Not Applicable, Series Gemini