High quality steel taps and dies split dies with machined lead ins for ease of use die holder features self centring mechanism for straight and accurate thread cutting contents taps and dies m3x05 m4x07 m5x08 m6x1 m8x125 m10x15 m12x175 unf 14 28 516 24 38 24 716 20 12 20 bsp 18 28 14 19 tap wrench t bar tap wrench die holder thread gauge screwdriver