Thread Repair Kit, Insert Types Included Helical Inserts, Compatible Material Metal, Drill Bit Sizes Included 31/64 in, Finish Plain, Helical Insert Type Free-Running, Insert Length 12 mm, 18 mm, 24 mm, Insert Material Stainless Steel, Material Grade/Class 18-8, Maximum Hole Diameter Not Applicable, Number of Inserts 18, Number of Pieces 22, Number of Sizes 3, System of Measurement Metric, Tang Style Tanged, Tap Sizes Included M12-1.25, Thread Direction Right Hand, Thread Size M12-1.25