Die Set, Hex, Solid, Carbon Steel, Number of Dies in Set 16, Thread Sizes Included 1/2 In.-13, 1/2 In.-20, 1/4 In.-20, 1/4 In.-28, 3/4 In.-10, 3/4 In.-16, 3/8 In.-16, 3/8 In.-24, 5/16 In.-18, 5/16 In.-24, 5/8 In.-11, 5/8 In.-18, 7/16 In.-14, 7/16 In.-20, 9/16 In.-12, 9/16 In.-18, Thread Standard UNC, Thread Direction Right Hand