Thread Repair Kit Insert Types Included Helical Inserts Compatible Material Metal Drill Bit Sizes Included 1/4 in 13/32 in 13/64 in 21/64 in Finish Plain Helical Insert Type Free-Running Insert Length 7.5 mm 9 mm 12 mm 16 mm Insert Material Stainless Steel Material Grade/Class 18-8 Maximum Hole Diameter Not Applicable Number of Inserts 4 Number of Pieces 60 Number of Sizes 3 System of Measurement Metric Tang Style Tanged Tap Sizes Included M10-1.50 M5-0.80 M6-1.00 M8-1.25