Lang  972 40 Piece Fractional and Metric Thread Restorer Kit Contains 7 SAE coarse and fine dies, 6 coarse and fine taps, 6 metric taps and dies, 1 metric file, and 1 SAE rethread file Rethreading tools are color- coded for quick visual identification Highly tempered for strength and durability and are hex shaped for use with a socket or wrench Made in the USA