Thread Insert Tool, Compatible External Thread Size 7/16 In.-14, Compatible Insert Length Not Applicable, Compatible Insert Material Metal, Compatible Insert Style 2 keys, Compatible Insert Type Key Locking Inserts, Compatible Internal Thread Size 1/4 In.-28, Compatible Thread Direction Right Hand, Compatible Thread Type Coarse, Material steel, Overall Length 3 in, System of Measurement Inch, Tool Type Keylocking Install Tool, Series MS/NAS