Threaded Shank Adapter, Abrasive Mounting Connector Size 1/4 In.-20, Abrasive Mounting Connector Type Threaded Shank, Tool Mounting Connector Size 1/4 in, Tool Mounting Connector Type Straight Shank, Overall Length Not Applicable, Product Type Flap Wheel Threaded Shank Adapter, Compatible Wheel Diameter (Maximum) Not Applicable, Compatible Wheel Diameter (Minimum) Not Applicable, Compatible Wheel Thickness (Maximum) Not Applicable, Compatible Wheel Thickness (Minimum) Not Applicable