■ONE TOOL RESTORES INCH OR METRIC RH OR LH THREADS! ■NO CALIBRATION REQUIRED. ■SELF ADJUSTING TO ANY PITCH & SIZE WITHIN RANGE. ■AUTOMATICALLY CHASES GOOD THREADS TO REPAIR THE DAMAGE. ■5/32”–3/4” 4–19MM ■PIPE THREADS UP TO 7/16” ■60° ,ISO,UNC, UNF, NPT ■55° ,BSW,BSF, BSP