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 metal features: Beautiful floor and diverse use possibilities; Good corrosion resistance, longer than ordinary steel; Good corrosion resistance; High strength, so the opportunity of using a thin plate; High temperature oxidation resistance and high strength, so it'll face up to hearth Normal temperature processing, ie clean plastic processing; since it doesn't need floor treatment, it is simple and simple to maintain; clean, high finish; good welding performance.