The use of thick copper bars helps improve work efficiency and is suitable for long-term use. Integrated design, beautiful and clean, with fine heat radiation effect. Suitable for 18650 battery spot welding machine. There are double springs on the handle, and each soldering pen can be expanded and contracted independently. Built-in limit switch, one-handed operation, no pedal needed. It feels comfortable, can support long-term use, is stable and reliable, wear-resistant and labor-saving. colour: black/blue/white Material: metal + plastic Size: 155x45x25mm<br><br>Package Contents: 1 set x battery spot welder Only the above package content, other products are not included. Note: Light shooting 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.