Thread Repair Kit Insert Types Included Helical Inserts Compatible Material Metal Drill Bit Sizes Included 18.5 mm Finish Plain Helical Insert Type Free-Running Insert Length 27 mm Insert Material Stainless Steel Material Grade/Class 18-8 Maximum Hole Diameter 15.294 mm Number of Inserts 5 Number of Pieces 12 Number of Sizes 1 System of Measurement Metric Tang Style Tanged Tap Sizes Included M18-2.50 Thread Direction Right Hand Thread Size M18-2.50 Thread Type Coarse