50/100/250/500Pcs 18650 Battery Spot Welding Cap Alternative Electrode Tip Cap Positive Spot Welding Accessories Battery Negative Flat Gasket Product Name: 18650 Battery Spot Welding Cap and Flat Gasket Material: stainless-steel Stainless steel features: Beautiful floor and assorted use possibilities; Good corrosion resistance, longer than usual steel; Good corrosion resistance; High strength, so the potential for utilizing a thin plate; High temperature oxidation resistance and high strength, so it's going to resist hearth Normal temperature processing, ie clean plastic processing; since it doesn't want floor treatment, it is simple and easy to maintain; clean, excessive finish; nice welding performance.