Thread Repair Kit, Insert Types Included Helical Inserts, Compatible Material Metal, Finish Plain, Helical Insert Type Free-Running, Insert Length 1 49/64 in, Insert Material Stainless Steel, Number of Inserts 6, Number of Pieces 4, Number of Sizes 1, System of Measurement Metric, Thread Size M30, Thread Type Metric, Manufacturer Location Made in USA, Includes Insert, Tap, Tool