Product Overview Features and Benefits: Includes Machine Screw Plug Tap and 5/8" Hexagon Dies in sizes : 4 - 40 NC, 6 - 32 NC, 8 - 32 NC, 10 - 24 NC, 10 - 32 NF, 12 - 24 NC Includes: Fractional Thread Plug Tap and 1" Hexagon