Arbor Hole Shank Adapter Abrasive Mounting Connector Size 3/4 in 1-1/4 in Abrasive Mounting Connector Type Unthreaded Hole Tool Mounting Connector Size 1/4 in Tool Mounting Connector Type Straight Shank Overall Length Not Applicable Product Type Flap Wheel Unthreaded Arbor Hole Adapter Compatible Wheel Diameter (Maximum) Not Applicable Compatible Wheel Diameter (Minimum) Not Applicable Compatible Wheel Thickness (Maximum) Not Applicable