General description The 8PCS welding needle set is designed for efficient and precise welding applications, particularly in battery production. These needles help avoid electrode sticking and ensure a clean welding site with beautiful points, preventing virtual welding phenomena and reducing spark generation. Technical specifications Material: Alumina copper Length: 40mm Color: Copper Package Contents: 16x Welding Needle Measurement allowed error: +/- 1-3 cm Usage Ideal for spot welding nickel strips, nickel plated steel sheets, and coated steel strips in battery production. Applicable in the production of Ni-, Ni-Cd, polymer, and lithium batteries for connecting connectors, cores, and lead sheets.