Surface-Conditioning Disc Mandrel, Abrasive Mounting Connector Size 1/4 in, Abrasive Mounting Connector Type Unthreaded Hole, Tool Mounting Connector Size 1/4 in, Tool Mounting Connector Type Straight Shank, Overall Length 2 1/2 in, Product Type Surface-Conditioning Disc Mandrel, Outside Flange Diameter 1 1/2 in, Compatible Wheel Diameter (Maximum) 6 in, Compatible Wheel Diameter (Minimum) Not Applicable, Compatible Wheel Thickness (Maximum) 1/2 in