Feature: *USB charging: easy to operate by plugging in the included USB data cable, and there are various ways to plug it in. *Easy to carry: Portable, ideal for outdoor operation. *The tip of the soldering iron is made of steel, which is resistant to corrosion and rust, and will serve 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. *Easy to Use: All soldering iron tips can be used, after soldering, there will be tin slag on the soldering iron tip, just wipe it off with this sponge, and the tin slag will fall off. Specification: Product Name: Soldering Iron Tip Material: Steel Color: Silver Size: (Approx. ) 50 mm/1.97 inches Optional Type: B, C, K Suitable for: Soldering iron tip with E10 interface Quantity: 2pcs Set Package Included: 1 x Soldering Iron Tip 1 × Sponge Note: 1.Transition: 1cm=10mm=0.39inch. 2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 3. Please allow slight manual measurement deviation for the data.