1) A variety of joints can realize the embedding of various M2 (common to M2.5), M3, M4, M5, M6 (1/4 inch), and M8 hot melt nuts 2) Compatible with standard 936 universal soldering iron tips, convenient and practical (other models: FX-888D) 3) Female and sub-head design, hand-tightened knurled joint, the head joint can be disassembled at any time in the cooling state to replace different types of threaded indenter 4) Brass material, good thermal conductivity, end face contact, prevents the nut from skewing, and facilitates quick embedding of the nut into plastic parts 5) Compared with other similar indenter, our indenter is embedded at a small distance to avoid plastic parts after being pressed in. The head is not easy to damage the plastic parts and can be inserted into the interior of the plastic parts to a certain depth. Specification: Processing technology: CNC precision turning Heating core thread: M4 Nut head: M2, M2.5, M3, M4, M5, M6, M8 Colour:random, don't accept the specified color Material:Metal The actual product may have slight color difference or difference, which will not affect the use Package Contents: 1 x Heating core 7 x Nut heads 1 x 936 Adapter 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.