Metal Zipper One way zipper. Good performance in teeth strength. Ideal for shoes fasterner. 1.Material: Alumium, Copper, Brass ... Availiable: 3#, 4#, 5#, 8#, 10#3.Teeth Style Available: Y Teeth, Stanadard Teeth.4.Teeth Color Available: Shinny Silver, Shinny Gold, Antique Brass, Antique ... , Crystal Pearl, Black Pearl, Coffee Gold......5.Type Available: Long chain, C/E, O/E, 2 Way O/E, 2 Way ...