Tang Breaking Tool, Compatible External Thread Size #3-32, #8-36, M4, Compatible Insert Material 18-8 Stainless Steel, Compatible Insert Style Tanged, Compatible Insert Type Helical Inserts, Compatible Internal Thread Size #8, M4, Compatible Thread Direction Right Hand, Material Steel, Overall Length 5 in, System of Measurement Inch/Metric, Tool Type Tang Breaking Tool, Features Spring Loaded, Series Recoil