Specifications: A pair of Japanese concentric ball-head pins are shipped as standard, and the use effect is good. It is made of thick metal strips, with beautiful and clean appearance and fast heat dissipation, which is very suitable for assembling battery packs. The handle can be extended and contracted by double springs, and each welding pen can be independently extended and contracted, and the strength is appropriately controlled, so it will not happen that the ordinary integrated spot welding pen cannot achieve the pressure balance of the two welding pins, the welding is not firm, the spark is large, and the work efficiency Inferior situation. Built-in process switch, it ensures single-handed operation, no longer need foot pedal, so that the work efficiency is greatly improved. When the hand uses a pen-type grip spot welding handle, the palm short muscles can touch a large area of the battery surface, and it will not be fatigued due to the long process and the heavy spot welding handle during long-term work. Item Name: Spot Welding Pen Material: Plastic, Metal Features: Safe, Durable, Flexible, Fast Heat Dissipation Size: 15.5cm x 4.5cm x 2.5cm/6.10" x 1.77" x 0.98" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. It is an integrated spot welding pen and needs to be used together with the spot welding machine; as the welding pen of the spot welding machine, it cannot be used alone. Package Includes: 1 x Spot Welding Pen