1. Various joints can be used to embed various hot-melt nuts M2 (shared by M25), M3, M4, M5, M6(1/4Inch) and M8. 2. Compatible with standard 936 universal welding head, convenient and practical. 3. The design of the male and female head, the knurled joint can be screwed by hand, and the head joint can be disassembled at any time in the cooling state to replace different types of threaded heads. 4. Brass material, good heat conduction, end contact, preventing the nut from skewing, and convenient and quick embedding of the nut into plastic parts. 5. After the indenter is pressed in, it is embedded for a short distance to avoid the plastic part, and the head is not easy to damage the plastic part, so it can be inserted into the plastic part to a certain depth. Plug Type:US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the United States, the Philippines and so on./EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Voltage:AC110V/AC220V Colour:As Shown Material:Plastic+Copper Package Contents: 1 * soldering iron 1 * connector 6 * pressing heads Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.