1. A variety of joints can realize the embedding of M2 (common to M2.5), M3, , M5, M6 (1/4Inch), and M8 hot melt nuts 2. Compatible with standard 936 universal soldering iron tips, convenient and practical (other models: FX-888D) 3. Brass material, good thermal conductivity, end face contact, prevents the nut from skewing, and facilitates quick embedding of the nut into plastic parts 4. Compared with other similar indenter, our indenter is embedded at a short 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 plastic parts to a certain depth. Product name: Internal thread hot melt nut pressure head kit Product scope of application: This product is suitable for use with standard 936 universal soldering iron tips, used for M2 (common to M2.5), M3, , M5, M6 (1/4inch), M8 and other hot-melt nuts or inserts, often used for hot-melting copper nuts on 3D printers or implanting nuts on plastics Processing technology and color: CNC turning Colour:Gold Material:brass Package Contents: 8 * Heat Insert Nut Iron Tip 100 * M3 nut 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.