Tap and Die Set Number of Pieces 30 Die Shape Round Tap Type Straight Flute Die Material Carbon Steel 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 Die 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