Screw Lock-Type Wheel Adapter Abrasive Mounting Connector Size 1/8 in Abrasive Mounting Connector Type Unthreaded Hole Tool Mounting Connector Size 1/4 in Tool Mounting Connector Type Straight Shank Overall Length 6 in Product Type Screw Lock-Type Wheel Adapter Outside Flange Diameter 3/8 in Compatible Wheel Thickness (Maximum) 1/4 in Compatible Wheel Thickness (Minimum) Not Applicable