Tungsten steel.
Contents: long handle adjustable tap wrench.
Tap and dies include: die handle, screwdriver, T handle wrench, screw pitch gauge.
M3 x 0.5, M3 x 0.6, M3.5 x 0.6, M4 x 0.7, M4 x 0.75, M5 x 0.8, M5 x 0.9, M6 x 0.75, M6 x 1.0, M7 x 1.0, M8 x 1.0, M8 x 1.25, M10 x 1.25, M10 x 1.5, M12 x 1.5, M12 x 1.75, NPT.