Thread Repair Kit, Insert Types Included Helical Inserts, Compatible Material Metal, Drill Bit Sizes Included 25/64 in, Finish Plain, Helical Insert Type Free-Running, Insert Length 3/8 in, 9/16 in, 3/4 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 3/8 In.-24, Thread Direction Right Hand, Thread Size 3/8 In.-24