Thread Repair Kit, Insert Types Included Helical Inserts, Compatible Material Metal, Drill Bit Sizes Included 29/64 in, Finish Plain, Helical Insert Type Free-Running, Insert Length 7/16 in, 21/32 in, 7/8 in, 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 Inch, Tang Style Tanged, Tap Sizes Included 7/16 In. -20, Thread Direction Right Hand, Thread Size 7/16 In. -20. This item has been restricted from sale in the following state (s): []