Insert Installation Tool, Compatible External Thread Size 1/2 In.-20, Compatible Insert Diameter Not Applicable, Compatible Insert Length Not Applicable, Compatible Insert Material Not Applicable, Compatible Insert Style Tanged, Compatible Insert Type Helical Inserts, Compatible Internal Thread Size 1/2 In.-20, Compatible Thread Direction Right Hand, Compatible Thread Type Fine, Material Steel, Overall Length 9 in, System of Measurement Inch, Tool Type Prewinder Type II, Includes -