This product is an integrated spot welding pen, which needs to be connected to a spot welding machine. It is only a spot welding pen and cannot be used alone. Each welding pen is independently extended and the force is controlled moderately. integrated spot welding pen cannot balance the pressure of the two welding needles, resulting in loose welding, large , and low work efficiency. The use of double springs to independently extend and retract solves this problem, which is suitable for batch spot welding production. Internal extension solves this problem, which is suitable for batch spot welding production. Built-in travel switch, one-handed operation, no longer need a foot pedal, greatly improves work efficiency. When the hand uses a pen-style grip spot welding handle, the palmar brevis can touch a large area of the battery . When working for a long time, it will not be fatigued due to the long stroke and heavy spot welding handle, which is very suitable for batch production. Efficient Welding Tool: Experience seamless battery welding with our handheld spot welder, designed specifically for 18650 batteries. It features a built-in switch and an automatic trigger for enhanced precision and ease of use. User-Friendly Design: The compact and design ensures easy handling and portability, making it ideal for both professional and DIY projects. Construction: Built to last, our spot welder is equipped with robust materials that withstand rigorous use, ensuring long-term reliability. Due to different batches, there may be differences in product appearance and printed text, which will not affect use Colour:Blue Material:copper Package Contents: 1 x Spot Welding Pen kit Only the above package content, other products are not included. Note: Light reflection 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.