Description: Stable Performance: the top and bottom of the soldering head are smooth and stable, the solder joint is smooth and even after welding, and the tin is smooth and more reliable. High Sensitivity: it is made by various processes, which can prolong the service life. The sensor is completely in front, which is extremely sensitive to temperature change and has small heat loss. Mini Design: compared with the traditional iron head, this mini iron head has smaller cross section, improves thermal conductivity and work efficiency! Easy to Replace: this accessory can be replaced freely, and the product has passed many plug-in tests without damage. It is normal for the tip of the product to turn light yellow or light gray due to heat. The difference between silver plating and bare copper is: silver plating is a layer of nickel plating on the basis of pure copper to prevent oxidation and keep it bright silver all the time. Pure copper is the surface without treatment, pure copper will change color after a long time. But the function and material are exactly the same. Specification: Name: soldering iron head 510 interface general Power: 8W Soldering head length: 51mm Scope of application: precision welding Temperature setting range: 500 °C Color: Silver Material: Copper Size Chart: 5.5cm/2.17inch Package Includes: 3 Pieces Soldering Iron Head Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!