High-Quality Material: Crafted from premium copper and aluminum oxide, this 3mm electrode head ensures superior conductivity and durability. Ideal for professional-grade spot welding, particularly with 18650 power batteries. Welding: Designed for and efficiency, the double head feature of this spot welding needle allows for enhanced stability and accuracy in battery welding tasks, ensuring strong welds every time. Safe and Reliable: Engineered to meet high safety standards, this electrode head minimizes welding and overheating, ensuring a safe working environment. Perfect for continuous heavy-duty use in assembling battery packs. Versatile Application: While primarily used for 18650 power batteries, this versatile welding needle can also be applied to other types of batteries and small electronic components requiring precise spot welding. and : Proudly , this electrode head is a must-have for DIY enthusiasts and professionals working with electrical . It combines quality with performance for all your welding needs. Color: As Shown Material: Copper Package Contents: 10*-Copper Aluminum Oxide Electrode Head 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.