Nylon long chain zipper different size:3#,5#,7#,8#,10# long chain long chain zipper 1: Zipper Specifications: 3#, 4#, 5#, 7#, 8#, 10# (Y teeth ... -way closed end; " X " type, " O " type zipper available.3: Slider: 3#, 4#, 5#, 7#, 8#, 10# : auto lock, semi-auto lock ... , pls feel free to contact with us, thank you! No.7 nylon long chain zipper