Split dies with machined lead ins for ease of use die holder features self centring mechanism for straight and accurate thread cutting set includes a range of drill bits and taper plug taps contents taper plug taps and dies coarse m3x05 m35x06 m4x07 m45x075 m5x08 m6x1 m8x125 m10x15 m12x175 fine m2x025 m3x035 m4x05 m5x05 m6x075 m8x1 m10x125 m12x125 taper plug tap die 18bsp drill bits 17 25 26 29 33 35 38 42 45 5 53 68 7 8