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 In.-16 5/16 In.-18 7/16 In.-14 Number of Dies in Set 5 Thread Standard UNC