Disc Brush Drive Arbor Abrasive Mounting Connector Size 1 1/4 in Abrasive Mounting Connector Type Unthreaded Hole Tool Mounting Connector Size 1/2 in Tool Mounting Connector Type Straight Shank Overall Length 1 3/4 in Product Type Disc Brush Drive Arbor Compatible Wheel Diameter (Maximum) 3 in Compatible Wheel Diameter (Minimum) 2 in Maximum Operating Speed 6 000 RPM