This spot welding pen comes standard with a pair of Japanese concentric ball bearing needles for efficient welding. This 18650 battery spot welding pen is suitable for long-term work, improving work efficiency and is made of thick brass bar. The appearance is clean and heat dissipation is fast. It is suitable for battery assembly. The brass bars are cleaned and protected with strong acid to ensure the gloss of the brass bars. The handle has double springs to expand and contract, and each welding pen is independently expandable, with moderate force control. The handle has double springs to expand and contract, and each welding pen is independently expandable, with moderate force control. Welding Pen Battery Spot Welder Battery Spot Welding Pen Torch Pen Pencil Torch Mini Welder Lion Battery Mini Soldering Iron Welding Pen Welder Pen 18650 Spot Welder Quip Spot Welding Feature: 1. The spot welding pen comes standard with a pair of Japanese concentric ball bearing needles, which is efficient. 2. This 18650 battery spot welding pen, suitable for long-term work, improves work efficiency, made of thick brass bar. 3. The appearance is clean and heat dissipation is fast. It is suitable for battery assembly. The brass bars are cleaned and protected with strong acid to ensure the gloss of the brass bars. 4. The handle has double springs to expand and contract, and each welding pen is independently expandable, with moderate force control. 5. It is not possible for the ordinary one-piece spot welding pen to achieve the pressure balance of the two welding needles, resulting in weak welding, large sparks, and low work efficiency. Specification: Item Type: Pair of Welding Pen Battery Points Material: ABS brass Uses: Suitable for industrial spot welding Working Voltage: DC 4-12V Current: 800A Package List: 1 x Spot Welding Pen 2 x Concentric Ball Bearing Needles 2 x Spring 1 x Hexagonal cl