Thread Gauge, Compatible External Thread Size #3-48, Compatible Insert Diameter Not Applicable, Compatible Insert Length Not Applicable, Compatible Insert Material Not Applicable, Compatible Insert Style Tanged, Tangless, Compatible Insert Type Helical Inserts, Compatible Internal Thread Size #3-48, Compatible Thread Direction Right Hand, Compatible Thread Type Coarse, Material Steel, Overall Length 3 1/2 in, System of Measurement Inch, Tool Type Thread Gauge, Includes -, Series Heli-Coil