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. The battery spot welding pen is suitable for long-term work and improves work efficiency. It is made of thickened copper bars, which has a beautiful and neat appearance. The overall copper bars have fast heat dissipation and are very suitable for assembling battery packs. The copper bars are all cleaned with strong acid and protected to that the brightness of the copper bars is very beautiful. The handle has double springs for extension. 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 not be fatigued due to the long stroke and heavy spot welding handle, which is very suitable for batch production. Suitable for 18650 battery spot welding machine. Colour:Red Material:copper Package Contents: 1x Spot Welding Pen 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.