40pc Tap & Die Set manufactured with heat treated alloy steel, consisting of national coarse, national fine & pipe combination thread. Containing one tap & die in each of the following sizes 3 x 0.5, 3 x 0.6, 4 x 0.7, 5 x 0.8, 5 x 0.9, 6 x 1.0, 6 x 0.75, 7 x 1.0, 7 x 0.75, 8 x 1.25, 8 x 1.0, 10 x 1.25, 10 x 1.5, 12 x 1.75, 12 x 1.5, 1/8 pt, plus long handle adjustable tap wrench, die handle, 'T' type handle tap wrench, flat screwdriver, & screwpitch gauge