Spot welding pen with automatic trigger for 18650 battery spot welding pen with integrated spot welder with trigger small spot welding

Specifications: Materials: Aluminum alloys and copper Color: Blue/Black/White (optional) Pen length: approximately 155 mm Cable length: approximately 85 cm Accurate fine. Easy to use. Durable in use. Note: This product is an integrated spot welding pen, which must be used with a spot welding machine. It is just a spot welding pen, and cannot be used alone. The package includes: 1 × spot welding pen