This tapping die set includes seven taps in different size for general purpose use, M3 M4 M5 M6 M8 M10 M12, and one tap wrench, which is enough for daily use, and also a great gift to your friends who love handwork. The screw extractor set is used for general wood, soft metal, aluminum, acrylic plate, PCB, in applications such as routine maintenance, repair work and for re-threading where high accuracy and tolerance thread is not critical, a must buy threading tool. The adjustable wrench kit can use with taps and can also be used on the left-hand tap, reamers, screw extractors, and other tools with a square shank. The metric thread tap set is easy to use, even for the beginners.