Tap and Die Set, Number of Pieces 12, Die Shape Round, Tap Type Straight Flute, Die Material Carbon Steel, Thread Sizes Included 1/2 In.-13, 1/4 In.-20, 3/8 In.-16, 5/16 In.-18, 7/16 In.-14, Die Thread Sizes Included 1/2 In.-13, 1/4 In.-20, 3/8...