Thread: M2 M3 M4 M5 M6 M8\r Suitable for plastic 3D printer soldering iron Item: Heat Insert Nut Iron Tip\r Size: About 2.5x0.4cm/0.98x0.16inch\r Material: Brass\r Features:\r Brand new and high quality.\r A variety of connectors, which can realize the embedding of various M2 (M2.5), M3, M4, M5, M6 (1/4\"), fusible nuts.\r Hand-twisted knurled joints, you can disassemble the main joints in the cooling state to replace various types of threaded inserters.\r Metal material, good thermal conductivity, end surface contact, prevents the nut from being distorted, and is convenient and quick to embed the nut into the plastic part.\r Compared with other similar retractors, our retractor is embedded at a small distance after being pressed to avoid the plastic part, and the head is not easy to damage the plastic part and can be inserted into the inside of the plastic part to a certain depth.\r Light in weight, small in size, convenient for you to store and handle, does not take up too much space.\r \r Package includes:\r 1 Set Heating Insert Tip\r \r Note:\r 1. Please allow 1-2 cm error due to manual measurement, make sure you do not mind before ordering.\r 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.