Thread Repair Kit, Insert Types Included Helical Inserts, Compatible Material Metal, Finish Plain, Helical Insert Type Free-Running, Insert Material Stainless Steel, Number of Pieces 53, Number of Sizes 18, System of Measurement Inch/Metric, Thread Size 1/2 In.-13, 1/2 In.-20, 1/4 In.-20, 1/4 In.-28, 3/8 In.-16, 5/16 In.-18, 5/16 In.-24, 7/16 In.-14, 7/16 In.-20, M10-1, M10-1.25, M10-1.50, M11-1, M12-1.5, M12-1.75, M5-.8, M6-1, M8-1, Thread Type Coarse, Fine, Manufacturer Location Made in USA