nylon zipper("x"type) nylon zipper("x"type) 1:Zipper Specifications: 3#, 4#, 5#, 7#, 8#, 10# .Nylon ... -end, Close-end and Two-way open," X " type, " O " type zipper available. 3:Slider: 3#, 4#, 5#, 7#, 8#, 10# . ... or as requests For more informations,pls feel free to contact with us,thank you!