The product in display is piece Tap and Die Set includes the following sizes: Sizes 0.6 - 1.0mm taps and screwplate. Set can be used for making both internal and external threads on small parts. Set can be used to thread wire, for re-threading of stripped threads on screws, earring backs and watch repair parts. Screw-plate (Die) is used for threading wire or making your own screws, while the individual taps are used. Hardened and tempered carbon steel; cuts gold, silver, brass, copper, soft steel and maintains edge. Set comes with 5 different taps and a matching screw-plate.Note - PLEASE CLEAN AND APPLY OIL BEFORE USE. Note - Remember to wear eye protection. Note - Photographs are for illustration purpose only. Actual item may slightly differ from the pictures shown.Scorpion is committed to providing the customer with the best source for value possible on the market. You will enjoy the quality, function and usefulness of our products.