Thread Repair Kit Insert Types Included Helical Inserts Compatible Material Metal Drill Bit Sizes Included 13 mm Finish Plain Helical Insert Type Free-Running Insert Length 3/4 in Insert Material Stainless Steel Material Grade/Class 18-8 Maximum Hole Diameter 0.4459 in Number of Inserts 10 Number of Pieces 14 Number of Sizes 1 System of Measurement Inch Tang Style Tanged Tap Sizes Included 1/2 In.-20 Thread Direction Right Hand Thread Size 1/2 In.-20 Thread Type Fine