Cup Brush Product Type Cup Brush Quick Change System Not Applicable Bristle Type Standard Twist Knot Wire Bristle Material Carbon Steel Brush Dia 4 in Wire Dia 0.014 in Bristle Length 1 in Grit Not Applicable Overall Length Not Applicable Compatible Tool Type Right-Angle Grinder Color Not Applicable Connector Type Threaded Hole Connector Size 5/8 In.-11 Operating Speed - Maximum 9 000 RPM Shank Length Not Applicable