Metal zipper: Material: aluminum; NO.3, NO.5, NO.8 are available; Nickel free zipper. Metal zipper:1, Description: Aluminum zipper, rainbow color teeth.2, Various tape colors are available.3, Closed end, open end, 2 ways, long chain.4, Suitable for garment, bag, case, shoes, etc.5, High quality and reasoable price. rainbow color metal zipper