High Speed Steel Machine Thread Tap with Alloy Tool Steel Round Thread Die Compatibility: M12 x 1.5mm Metric Tap and Die Kit Ideal for making or repairing external and internal threads, suitable for general applications and with transparent threads to meet machining requirements. Application : Can be used to treat holes during maintenance and repair work. It is suitable for drilling and tapping alloy steel, cast steel, cast iron, ferrous and non-ferrous metal materials, etc. The round die is made of alloy tool steel with good wear resistance. Taps and dies are sharp and durable. EASY TO USE : The round die can be used with an adjustable wrench (not included). The set screw in the middle of the wrench should be inserted into the die slot and tightened. Machine taps are used in drilling, tapping, CNC and milling machines. Suitable lubricating oil should be added to the sharp edge of the die and tapping when tapping.Note: The data are all manually measured, please allow 1-3cm error, due to the difference in light and display , there will be a certain color difference, the actual object received shall prevail.