Ideal kit for re - threading. Suitable for cutting threads on mild steel and aluminium. Manufactured from high carbon steel.|Contents: 4 coarse dies, 4 taps, die holder and T type tap wrench|High carbon steel|4 x Metric coarse dies: 3, 4, 5 and 6mm - 1" O/D|4 metric taper taps size: 3, 4, 5 and 6mm - 1" O/D, die holder 1" O/D, 'T' type tap wrench capacity M4 - M8