Flat Head Wheel Arbor, Abrasive Mounting Connector Size 3/8 in, Abrasive Mounting Connector Type Unthreaded Hole, Tool Mounting Connector Size 1/4 in, Tool Mounting Connector Type Straight Shank, Overall Length 1 3/4 in, Product Type Flat Head Wheel Arbor, Outside Flange Diameter 3/4 in, Compatible Wheel Thickness (Maximum) 3/8 in, Compatible Wheel Thickness (Minimum) Not Applicable, Maximum Operating Speed Not Rated. This item has been restricted from sale in the following state (s): []