Spot Welding Pen with Japanese Concentric BallPoint Needles Equipped with a pair of Japanese concentric ballpoint needles designed for precision and effective spot welding results. Built for longterm use with a durable thick brass bar construction that ensures reliable performance and extended service life. Designed to improve work efficiency for battery spot welding tasks, providing consistent results over time. Features a doublespring handle mechanism, allowing each spring to expand and contract independently. This ensures smooth operation and precise control of applied force for accurate welds. Key Benefits: Precision welding for consistent, quality results. Sturdy materials to withstand repeated use in demanding applications. Comfortable, controlled operation for improved accuracy and reduced fatigue. Ideal for: 1. Battery assembly and work, such as spot welding nickel strips to battery cells. 2. Electronics projects requiring precise and secure metal joins without excessive heat damage. 3. Smallscale metal fabrication tasks where accurate, repeatable welds are critical. Specifications: Needle Type: Japanese concentric ballpoint Material: Thick brass bar for durability Handle: Dual independent spring design for controlled expansion and contraction Application: Battery spot welding and similar precision welding tasks This spot welding pen offers the reliability, control, and efficiency that professionals and hobbyists need for detailed metal joining work.