HeliCoil Heli-Coil Master Thread Repair Kit, Fine Thread, Set of 60 Inserts (Installation Tools Included) (10-32, 1/2"-20, 1/4"-28, 5/16"-24, 3/8"-24, 7/16"-20 Threads)

Master Thread Repair Kit, Free Running, 304 Stainless Steel, Thread Type UNF, Number of Pieces 60, For Metal, Includes 12 Each 10-32x0.285,1/4-28x0.375, 5/16-24x0.469, 3/8-24x0.562, 6 Each 7/16-20x0.656, 1/2-20x0.750, and 6 Each of High Speed Steel Taps, Drills and Installation Tools.