Avoid electrode sticking. The welding site is not yellow, and the welding point is beautiful Avoid the phenomenon of virtual welding. Put an end to the phenomenon of welding spark is generated. Excellent electrical conductivity and thermal conductivity. Scope of application : Nickel sheet spot welding battery spot welding Standard diameter : 3mm It has good thermal stability, good plasticity and processing performance They are especially suitable for welding pure nickel strips and nickel-permeated steel sheets in the production of mobile phone batteries. Application: Suitable for spot welding between nickel strip, Nickelized steel sheet and coated steel strip in battery production. In the production of Ni- batteries, Ni-Cd batteries, polymer batteries, lithium batteries and other batteries, spot welding connectors, cores and lead-out sheets are used. Colour:copper Material:Alumina copper Size:Length: 40mm Package Contents: 8x welding needle Only the above package content, other products are not included. Note: Light 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.