Features Adopt thick copper bar, help enhance the working effiency, and suitable for long service time. Integrated design, beautiful and neat, with fine heat radiation effect. There are dual springs on the handle, each welding pen can expand and contract independently. Built-in limit switch, one hand operation, do not need foot pedal. With comfortable hand feelings, can support long time use, stable and reliable, wear resistant and effort saving. 100% brand new and high quality Features: Made of high-quality metal material, high performance, long service life, helps to improve work efficiency. Integrated design, beautiful and practical, with good heat dissipation effect. There are double springs on the handle, each welding pen can be telescopic independently. Built-in limit switch, operated with one hand, do not need foot pedal. With comfortable hand feelings, can be used for a long time, stable and reliable, wear-resistant and effort saving. Suitable for 18650 battery spot welding machine. Specifications: Voltage: 4-12V Material: metal Optional Colors: white, blue, cyan, black Size: app.155x45x25mm/6.10x1.77x0.98in Quantity: 1pc Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Packing list Package includes: 1 x Spot Welding Pen(other accessories demo in the picture is not included.)