HeliCoil Master Thread Repair Kit, Coarse Thread, Set of 54 Inserts (Installation Tools Included) (1/2"-13, 1/4"-20, 3/8"-16, 5/16"-18, 5/8"-11, 7/16"-14 Threads)

Master Thread Repair Kit, Free Running, 304 Stainless Steel, Thread Type UNC, Number of Pieces 54, For Metal, Includes 12 Each, 0.375, 0.469, 0.562, 6 Each 0.656, 0.750, 0.938 In Inserts, and 6 Each of High Speed Steel Taps, Drills and installation tools.