USB charging: easy to operate by plugging in the included USB data cable, and there are ways to plug it in. Easy to carry: Portable, perfect for outdoor operation. The tip of the soldering iron is made of brass, which is to and rust, and you for a long time. Application: Suitable for general welding applications, spot, wire and drag welding, wire tinning. This special custom soldering iron tip set can accomplish almost any soldering application you need. High quality, each is advanced production process. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Easy to Use: All soldering iron tips can be used, after soldering, there be tin slag on the soldering iron tip, just wipe it off with this sponge, and the tin slag fall off. Product Name:Soldering Iron Tip Suitable for:Soldering iron tip with E10 interface Type:B:Horseshoe head Colour:As Shown Material:copper Package Contents: 1 * Soldering Iron Tip 1 * sponge 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.