Blowlamps -Spot Welder Highlights Generic Brand Spot Welder Description: Adopt thick copper bar, help to improve working efficiency, and suitable for long service time. Integrated design, beautiful and neat, with fine heat radiation effect. There are two springs on the handle, each welding pen can expand and contract independently. Built-in limit switch, one-handed operation, no foot pedal needed. Suitable for 18650 battery spot welding machine. Note: Please connect to external 12V power source. Specification: It is a kind of fine quality spot welding pen, adopts copper bar thick, helps improve working efficiency and is suitable for long service time. Integrated design, beautiful and neat, with fine heat radiation effect. There are two springs on the handle, each welding pen can expand and contract independently. Built-in limit switch, one-handed operation, no foot pedal required. You can try. Material: copper aluminum alloy Welding needle size: 50 x3 x 3 mm / 1.97 x0.12 x0.12 in Item size: 155 x 45 x 25 mm / 6.10 x1 .77 x 0.98 in Cable Length: 85cm / 33in Item Weight: 250g / 8.82oz Package Size: 200 x 100 x 50mm / 7.87 x 3.94 x 1.97 inch Package weight: 300g / 10.58oz Package includes: 1 x spot welding pen 1x wrench 2x spring 2x switch module