1、Compatibility: Suitable for TS100/101 soldering iron tip, interchangeable with standard 936 common iron tip. Suitable for M2 (compatible with M2.5), M3, M4, M5, M6 (1/4in), and hot melt nuts or inserts like M8 commonly used on 3D printers. 2、Material: The male head and female head are made of brass material, TS100 soldering iron tip is machined with TS100‑C4 iron core for optimal performance. 3、Easy to Replace: Designed with hand tightened knurling joints, the main joint can be disassembled and replaced with different types of threaded pressure heads in a cooling state. 4、Excellent Heat Conduction: Brass material with good heat conduction, ensures direct contact with the end face to prevent nut tilt, facilitating quick melting into plastic parts. 5、Precise Embedding: Our insert has a smaller embedding distance compared to other similar heads, preventing plastic part deformation after embedding. The head is not easily damaged and can be inserted into the plastic part to a certain depth. Item Type: Soldering Irons Heat Set Tip Material: Brass Thread Size: M2 / M2.5 / M3 / M4 / M5 / M6 / M7 / M8 Application: for TS100/101 1 x TS100 Soldering Iron Tip 1 x Connector 7 x Heat Set Insert Tips 1 x Plastic Box