Adopt thick copper rods, improve work efficiency and are suitable for long operating times. Built-in design, beautiful and neat, with fine heat radiation. There are two springs on the handle. Each welding pin can expand and contract independently. Built-in limit switch, one-handed operation, no foot pedal required. With comfortable hand feeling, can support long-term use, stable and reliable, wear-resistant and effortless. Suitable for 18650 battery spot welder. This is a kind of good quality spot welding pen that uses a thick copper rod, helps improve work efficiency and is suitable for long operating times. Built-in design, beautiful and tidy, with fine heat radiation. 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 it. Features: Adopt thick copper rods, improve work efficiency and are suitable for long operating times. Built-in design, beautiful and tidy, with fine heat radiation. 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. With comfortable hand feeling, can support long-term use, stable and reliable, wear-resistant and effortless. Suitable for 18650 battery point welder. Specifications: Name: spot welding pen Colour: white, blue, green, black (optional). Item Size: 155 * 45 * 25 mm / 6.10 * 1.77 * 0.98 inch Product weight: 250 g Package size: 200 * 100 * 50mm / 7.87 * 3.94 * 1.97 inch Package Weight: 300g Box contents: 1 x spot welding pen.